libpayload: Create fox configs with names in the form board_variant.

It may be necessary to use different config settings for different variants
of the same board. We should make it possible to use different config files
depending on the variant. This might lead to a number of similar or identical
configs if the variants don't actually vary very much, but hopefully if we've
gone to the trouble of identifying them separately there are some meaningful
differences.

The fox boards are the only ones currently supported by libpayload that
actually have variants.

BUG=chrome-os-partner:19420
TEST=Built for wtm2 with a change to the ebuild to use the new names.
BRANCH=None

Change-Id: Ic445e80be26ecdd348dc1de7d6a351ab6f9f2cba
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/51461
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>

payloads/libpayload/configs/config.fox_baskingridge

@@ -0,0 +1,68 @@
+#
+# Automatically generated make config: don't edit
+# libpayload version: 0.2.0
+# Tue Sep  4 17:53:34 2012
+#
+
+#
+# Generic Options
+#
+# CONFIG_EXPERIMENTAL is not set
+# CONFIG_OBSOLETE is not set
+# CONFIG_DEVELOPER is not set
+CONFIG_CHROMEOS=y
+
+#
+# Architecture Options
+#
+CONFIG_ARCH_X86=y
+# CONFIG_ARCH_POWERPC is not set
+# CONFIG_ARCH_ARMV7 is not set
+# CONFIG_MEMMAP_RAM_ONLY is not set
+# CONFIG_MULTIBOOT is not set
+
+#
+# Standard Libraries
+#
+CONFIG_LIBC=y
+# CONFIG_CURSES is not set
+# CONFIG_TINYCURSES is not set
+# CONFIG_PDCURSES is not set
+CONFIG_CBFS=y
+CONFIG_LZMA=y
+
+#
+# Console Options
+#
+CONFIG_SKIP_CONSOLE_INIT=y
+CONFIG_CBMEM_CONSOLE=y
+CONFIG_SERIAL_CONSOLE=y
+CONFIG_SERIAL_IOBASE=0x3f8
+# CONFIG_SERIAL_SET_SPEED is not set
+# CONFIG_SERIAL_ACS_FALLBACK is not set
+CONFIG_VIDEO_CONSOLE=y
+# CONFIG_VGA_VIDEO_CONSOLE is not set
+# CONFIG_GEODELX_VIDEO_CONSOLE is not set
+CONFIG_COREBOOT_VIDEO_CONSOLE=y
+CONFIG_PC_KEYBOARD=y
+CONFIG_PC_KEYBOARD_LAYOUT_US=y
+# CONFIG_PC_KEYBOARD_LAYOUT_DE is not set
+
+#
+# Drivers
+#
+CONFIG_PCI=y
+CONFIG_NVRAM=y
+# CONFIG_RTC_PORT_EXTENDED_VIA is not set
+# CONFIG_SPEAKER is not set
+# CONFIG_STORAGE is not set
+CONFIG_USB=y
+CONFIG_USB_UHCI=y
+CONFIG_USB_OHCI=y
+CONFIG_USB_EHCI=y
+CONFIG_USB_XHCI=y
+CONFIG_USB_HID=y
+CONFIG_USB_HUB=y
+CONFIG_USB_MSC=y
+CONFIG_LITTLE_ENDIAN=y
+CONFIG_ARCH_SPECIFIC_OPTIONS=y

payloads/libpayload/configs/config.fox_wtm2

@@ -0,0 +1,68 @@
+#
+# Automatically generated make config: don't edit
+# libpayload version: 0.2.0
+# Tue Sep  4 17:53:34 2012
+#
+
+#
+# Generic Options
+#
+# CONFIG_EXPERIMENTAL is not set
+# CONFIG_OBSOLETE is not set
+# CONFIG_DEVELOPER is not set
+CONFIG_CHROMEOS=y
+
+#
+# Architecture Options
+#
+CONFIG_ARCH_X86=y
+# CONFIG_ARCH_POWERPC is not set
+# CONFIG_ARCH_ARMV7 is not set
+# CONFIG_MEMMAP_RAM_ONLY is not set
+# CONFIG_MULTIBOOT is not set
+
+#
+# Standard Libraries
+#
+CONFIG_LIBC=y
+# CONFIG_CURSES is not set
+# CONFIG_TINYCURSES is not set
+# CONFIG_PDCURSES is not set
+CONFIG_CBFS=y
+CONFIG_LZMA=y
+
+#
+# Console Options
+#
+CONFIG_SKIP_CONSOLE_INIT=y
+CONFIG_CBMEM_CONSOLE=y
+CONFIG_SERIAL_CONSOLE=y
+CONFIG_SERIAL_IOBASE=0x3f8
+# CONFIG_SERIAL_SET_SPEED is not set
+# CONFIG_SERIAL_ACS_FALLBACK is not set
+CONFIG_VIDEO_CONSOLE=y
+# CONFIG_VGA_VIDEO_CONSOLE is not set
+# CONFIG_GEODELX_VIDEO_CONSOLE is not set
+CONFIG_COREBOOT_VIDEO_CONSOLE=y
+CONFIG_PC_KEYBOARD=y
+CONFIG_PC_KEYBOARD_LAYOUT_US=y
+# CONFIG_PC_KEYBOARD_LAYOUT_DE is not set
+
+#
+# Drivers
+#
+CONFIG_PCI=y
+CONFIG_NVRAM=y
+# CONFIG_RTC_PORT_EXTENDED_VIA is not set
+# CONFIG_SPEAKER is not set
+# CONFIG_STORAGE is not set
+CONFIG_USB=y
+CONFIG_USB_UHCI=y
+CONFIG_USB_OHCI=y
+CONFIG_USB_EHCI=y
+CONFIG_USB_XHCI=y
+CONFIG_USB_HID=y
+CONFIG_USB_HUB=y
+CONFIG_USB_MSC=y
+CONFIG_LITTLE_ENDIAN=y
+CONFIG_ARCH_SPECIFIC_OPTIONS=y