payloads/tianocore: ignore whitespace change when applying patches

This change is required to apply patch
06_CorebootPayloadPkg_keep_cb_table since conflict in white space
between patch and target file in edk2 makes patch rejected while
building under coreboot-sdk:1.52.

Change-Id: I38f7d46925cc00a2b5c5400e3fbf3579990f3fa5
Signed-off-by: Piotr Król <piotr.krol@3mdeb.com>
Reviewed-on: https://review.coreboot.org/27616
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Martin Roth <martinroth@google.com>

payloads/external/tianocore/Makefile

@@ -69,7 +69,7 @@ $(project_dir)/.version_$(TAG-y): fetch
 		for patch in $(CURDIR)/patches/*.patch; do \
 			echo "Applying $$patch"; \
 			cd $(project_dir); \
-			git am --keep-cr $$patch || \
+			git am --keep-cr --ignore-space-change $$patch || \
 				( echo " Error when applying patches.\n"; git am --abort; exit 1; ); \
 		done; \
 		if ! [ "$(TAG-y)" = "origin/master" ] ; then \