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, 3 insertions, 2 deletions

diff --git a/src/southbridge/intel/common/smihandler.c b/src/southbridge/intel/common/smihandler.c
index 0e372d69da..17fae11db3 100644
--- a/src/southbridge/intel/common/smihandler.c
+++ b/src/southbridge/intel/common/smihandler.c
@@ -17,6 +17,7 @@
 #include <types.h>
 #include <arch/io.h>
 #include <arch/acpi.h>
+#include <compiler.h>
 #include <console/console.h>
 #include <cpu/x86/cache.h>
 #include <device/pci_def.h>
@@ -108,11 +109,11 @@ static void busmaster_disable_on_bus(int bus)
 	}
 }
 
-__attribute__((weak)) void southbridge_gate_memory_reset(void)
+__weak void southbridge_gate_memory_reset(void)
 {
 }
 
-__attribute__((weak)) void southbridge_smm_xhci_sleep(u8 slp_type)
+__weak void southbridge_smm_xhci_sleep(u8 slp_type)
 {
 }