compiler.h: add __weak macro

Instead of writing out '__attribute__((weak))' use a shorter form.

Change-Id: If418a1d55052780077febd2d8f2089021f414b91
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25767
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Justin TerAvest <teravest@chromium.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/soc/nvidia/tegra210/bootblock.c b/src/soc/nvidia/tegra210/bootblock.c
index 3d4e8812a6..4d1ddf5d60 100644
--- a/src/soc/nvidia/tegra210/bootblock.c
+++ b/src/soc/nvidia/tegra210/bootblock.c
@@ -17,6 +17,7 @@
 #include <arch/hlt.h>
 #include <arch/stages.h>
 #include <bootblock_common.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <delay.h>
 #include <program_loading.h>
@@ -50,7 +51,7 @@ static void save_odmdata(void)
 	}
 }
 
-void __attribute__((weak)) bootblock_mainboard_early_init(void)
+void __weak bootblock_mainboard_early_init(void)
 {
 	/* Empty default implementation. */
 }