[XS] Change in coreboot[main]: include/efi: Introduce __efiapi for EFI calling convention flexibility

[Subrata Banik (Code Review)]

Subrata Banik has submitted this change. ( https://review.coreboot.org/c/coreboot/+/81620?usp=email )

Change subject: include/efi: Introduce __efiapi for EFI calling convention flexibility
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include/efi: Introduce __efiapi for EFI calling convention flexibility

This patch defines __efiapi (based on EFIAPI) for coreboot-compliant
EFI calls. This lays the groundwork for future 64-bit EFI calling
convention support within coreboot/FSP.

BUG=b:242829490
TEST=FSP debug log accessible via coreboot event handler.

Change-Id: I21660f8ebeed3b9ef060118928a940a470492bb8
Signed-off-by: Subrata Banik 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81620
Reviewed-by: Arthur Heymans 
Reviewed-by: Dinesh Gehlot 
Reviewed-by: Varshit Pandya 
Tested-by: build bot (Jenkins) 
---
M src/include/efi/efi_datatype.h
1 file changed, 3 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Varshit Pandya: Looks good to me, approved
  Dinesh Gehlot: Looks good to me, approved
  Arthur Heymans: Looks good to me, approved

diff --git a/src/include/efi/efi_datatype.h b/src/include/efi/efi_datatype.h
index 917d0c8..31612b8 100644
--- a/src/include/efi/efi_datatype.h
+++ b/src/include/efi/efi_datatype.h
@@ -34,6 +34,9 @@
 typedef BMP_COLOR_MAP efi_bmp_color_map;
 #endif

+/* EFIAPI calling convention */
+#define __efiapi EFIAPI
+
 /* Basic Data types */
 /* 8-byte unsigned value. */
 typedef UINT64 efi_uint64_t;