x86: efi: payload: Turn on acpi in the kernel command line

Now that we have full Linux kernel boot support on EFI payload,
avoid pass "acpi=off" to the kernel command line.

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

include/configs/x86-common.h

@@ -107,7 +107,7 @@
 #define CONFIG_BOOTFILE		"bzImage"
 #define CONFIG_LOADADDR		0x1000000
 #define CONFIG_RAMDISK_ADDR	0x4000000
-#ifdef CONFIG_GENERATE_ACPI_TABLE
+#if defined(CONFIG_GENERATE_ACPI_TABLE) || defined(CONFIG_EFI_STUB)
 #define CONFIG_OTHBOOTARGS	"othbootargs=\0"
 #else
 #define CONFIG_OTHBOOTARGS	"othbootargs=acpi=off\0"