Move the HAVE_ARCH_* config options from src/arch/x86 to src/.

The options that keep track of whether there are arch versions of the standard
string functions shouldn't be in the arch/x86 directory since they apply to
all architectures. Move them into the higher level, shared Kconfig defaulting
to off. Then, in each applicable arch (currently all of them) they can be
selected to on.

BUG=None
TEST=Built and booted on Link and Snow.
BRANCH=None

Change-Id: I1711efa699ddf31d29ebc672bd3728b472c26bb7
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/61072
Reviewed-by: Ronald G. Minnich <rminnich@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>

src/Kconfig

@@ -236,6 +236,14 @@ if ARCH_ARMV7
 source src/arch/armv7/Kconfig
 endif
 
+config HAVE_ARCH_MEMSET
+	bool
+	default n
+
+config HAVE_ARCH_MEMCPY
+	bool
+	default n
+
 menu "Chipset"
 
 comment "CPU"

src/arch/armv7/Kconfig

@@ -1,5 +1,12 @@
 menu "Architecture (armv7)"
 
+
+config ARM_ARCH_OPTIONS
+	bool
+	default y
+	select HAVE_ARCH_MEMSET
+	select HAVE_ARCH_MEMCPY
+
 # Maximum reboot count
 # TODO: Improve description.
 config MAX_REBOOT_CNT

src/arch/x86/Kconfig

@@ -1,5 +1,11 @@
 menu "Architecture (x86)"
 
+config X86_ARCH_OPTIONS
+	bool
+	default y
+	select HAVE_ARCH_MEMSET
+	select HAVE_ARCH_MEMCPY
+
 config MARK_GRAPHICS_MEM_WRCOMB
 	bool "Mark graphics memory as write-combining."
 	default n
@@ -94,14 +100,6 @@ config CMOS_DEFAULT_FILE
 config BOOTBLOCK_SOUTHBRIDGE_INIT
 	string
 
-config HAVE_ARCH_MEMSET
-	bool
-	default y
-
-config HAVE_ARCH_MEMCPY
-	bool
-	default y
-
 config IOAPIC_INTERRUPTS_ON_FSB
 	bool
 	default y if !IOAPIC_INTERRUPTS_ON_APIC_SERIAL_BUS