Ignore missing architectures for header updates, for use with
older kernels.

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
 util/update_headers.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/util/update_headers.sh b/util/update_headers.sh
index 789e2a42..bdfb798c 100755
--- a/util/update_headers.sh
+++ b/util/update_headers.sh
@@ -48,6 +48,7 @@ copy_optional_arch () {
 
 for arch in arm64 mips powerpc riscv x86
 do
+	[ -f $LINUX_ROOT/arch/${arch} ] || continue;
 	case "$arch" in
 		arm64)	KVMTOOL_PATH=arm/aarch64
 			copy_optional_arch asm/sve_context.h ;;
-- 
2.34.1