aarch64: Add ELF support

BUG=None
BRANCH=none
TEST=Build coreboot
Signed-off-by: Marcelo Povoa <marcelogp@chromium.org>

Original-Change-Id: I38684794fdf5bd95a32f157128434a13f5e2a2d5
Original-Reviewed-on: https://chromium-review.googlesource.com/185271
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Original-Tested-by: Marcelo Póvoa <marcelogp@chromium.org>
Original-Commit-Queue: Marcelo Póvoa <marcelogp@chromium.org>
(cherry picked from commit 67b74d3dc98a773c3d82b141af178b13e9bb6c06)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Id82a31dc94bb181f2d24eddcbfbfb6d6cdc99643
Reviewed-on: http://review.coreboot.org/7659
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/util/cbfstool/elfheaders.c b/util/cbfstool/elfheaders.c
index 634e76a..bee44d8 100644
--- a/util/cbfstool/elfheaders.c
+++ b/util/cbfstool/elfheaders.c
@@ -610,6 +610,7 @@
 
 	// The tool may work in architecture-independent way.
 	if (arch != CBFS_ARCHITECTURE_UNKNOWN &&
+	    !((ehdr->e_machine == EM_AARCH64) && (arch == CBFS_ARCHITECTURE_AARCH64)) &&
 	    !((ehdr->e_machine == EM_ARM) && (arch == CBFS_ARCHITECTURE_ARM)) &&
 	    !((ehdr->e_machine == EM_RISCV) && (arch == CBFS_ARCHITECTURE_RISCV)) &&
 	    !((ehdr->e_machine == EM_386) && (arch == CBFS_ARCHITECTURE_X86))) {