efi: app: Clean up defconfig

Move some #undef from efi-x86.h to efi-x86_defconfig as these are
already Kconfig options.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

configs/efi-x86_defconfig

@@ -3,6 +3,7 @@ CONFIG_VENDOR_EFI=y
 CONFIG_DEFAULT_DEVICE_TREE="efi"
 CONFIG_TARGET_EFI=y
 # CONFIG_CMD_BOOTM is not set
+# CONFIG_CMD_IMLS is not set
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_NET is not set
 CONFIG_OF_CONTROL=y
@@ -13,6 +14,5 @@ CONFIG_DEBUG_EFI_CONSOLE=y
 CONFIG_DEBUG_UART_BASE=0
 CONFIG_DEBUG_UART_CLOCK=0
 CONFIG_ICH_SPI=y
-# CONFIG_X86_SERIAL is not set
 CONFIG_TIMER=y
 CONFIG_EFI=y

include/configs/efi-x86.h

@@ -13,9 +13,6 @@
 
 #undef CONFIG_TPM_TIS_BASE_ADDRESS
 
-#undef CONFIG_CMD_IMLS
-
-#undef CONFIG_X86_SERIAL
 #undef CONFIG_ENV_IS_IN_SPI_FLASH
 #define CONFIG_ENV_IS_NOWHERE
 #undef CONFIG_VIDEO