[XS] Change in coreboot[main]: util/crossgcc/buildgcc: Add riscv64-elf to targets

[Jon Murphy (Code Review)]

Jon Murphy has submitted this change. ( https://review.coreboot.org/c/coreboot/+/86171?usp=email )

Change subject: util/crossgcc/buildgcc: Add riscv64-elf to targets
......................................................................

util/crossgcc/buildgcc: Add riscv64-elf to targets

All of the other targets support invoking the build with the full target
arch name.  RISC does not.  Update the script to allow riscv64-elf to
invoke the build the same way that riscv-elf does to minimize name
mangling and exceptions needed for tooling surrounding the
architecture name in paths. Leave riscv-elf in tact as an option so
we don't break anyone else.

BUG=None
TEST=./util/crossgcc/buildgcc --platform riscv64-elf

Change-Id: Ie737855053e00205ca85f54436c224ab3a1283d9
Signed-off-by: Jon Murphy 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86171
Tested-by: build bot (Jenkins) 
Reviewed-by: Raul Rangel 
Reviewed-by: Karthik Ramasubramanian 
---
M util/crossgcc/buildgcc
1 file changed, 2 insertions(+), 1 deletion(-)

Approvals:
  Raul Rangel: Looks good to me, approved
  Karthik Ramasubramanian: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 2ad98b8..1b0c89a 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -1038,7 +1038,8 @@
    x86_64*)		TARGETARCH=x86_64-elf;;
    i386-elf)		;;
    i386-mingw32)		;;
-	riscv-elf)		TARGETARCH=riscv64-elf
+	riscv-elf | riscv64-elf)
+				TARGETARCH=riscv64-elf
    			TARGET_GCC_OPTIONS="$TARGET_GCC_OPTIONS --with-isa-spec=20191213"
    			TARGET_BINUTILS_OPTIONS="$TARGET_BINUTILS_OPTIONS --with-isa-spec=20191213";;
    powerpc64*-linux*)	;;