efi: Set EFIAPI to 32-bit ABI for FSP1_1

Because PLATFORM_USES_FSP2_X86_32 default to false when
PLATFORM_USES_FSP1_1, efi_datatype.h wrongly defines EFI as
__attribute__((__ms_abi__)).

TEST=When some code involved in the build of a platform using
     FSP 1.1 such as Google/CYAN includes efi_datatype.h, it does
     not hit the following error: '__ms_abi__' calling convention
     is not supported for this target

Change-Id: I914f73ff06bfb801fc319b45b23d7ce4cb7a6d5d
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84402
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/efi/efi_datatype.h

@@ -13,7 +13,7 @@
  *
  * Fortunately, EDK2 header allows to override EFIAPI.
  */
-#if CONFIG(PLATFORM_USES_FSP2_X86_32)
+#if CONFIG(PLATFORM_USES_FSP1_1) || CONFIG(PLATFORM_USES_FSP2_X86_32)
 #define EFIAPI __attribute__((regparm(0)))
 #else
 #define EFIAPI __attribute__((__ms_abi__))