mainboard/: Select MISSING_BOARD_RESET appropriately

We didn't have a hard_reset() implementation for these boards. So
select the board_reset() stub for them.

Change-Id: I77651e3844632fb1a347008c96e53d23cc5a2646
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/29170
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/emulation/qemu-armv7/Kconfig

@@ -35,6 +35,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select ARCH_RAMSTAGE_ARMV7
 	select BOARD_ROMSIZE_KB_4096
 	select BOOT_DEVICE_NOT_SPI_FLASH
+	select MISSING_BOARD_RESET
 
 config MAINBOARD_DIR
 	string

src/mainboard/emulation/qemu-power8/Kconfig

@@ -24,6 +24,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select HAVE_UART_SPECIAL
 	select ARCH_POWER8
 	select BOOT_DEVICE_NOT_SPI_FLASH
+	select MISSING_BOARD_RESET
 
 config MAINBOARD_DIR
 	string

src/mainboard/emulation/qemu-riscv/Kconfig

@@ -23,6 +23,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select BOARD_ROMSIZE_KB_4096
 	select HAVE_UART_SPECIAL
 	select BOOT_DEVICE_NOT_SPI_FLASH
+	select MISSING_BOARD_RESET
 
 config MAINBOARD_DIR
 	string

src/mainboard/emulation/spike-riscv/Kconfig

@@ -20,6 +20,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select BOARD_ROMSIZE_KB_4096
 	select DRIVERS_UART_8250MEM
 	select BOOT_DEVICE_NOT_SPI_FLASH
+	select MISSING_BOARD_RESET
 
 config MAINBOARD_DIR
 	string