soc/intel/common/block/acpi: Change __attribute__((weak)) to __weak

Change-Id: I9ecd81ffaa48dbed225a23900704b259569cb7c8
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77527
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/block/acpi/acpi.c

@@ -287,7 +287,7 @@ void generate_p_state_entries(int core, int cores_per_package)
 	acpigen_pop_len();
 }
 
-__attribute__ ((weak)) acpi_tstate_t *soc_get_tss_table(int *entries)
+__weak acpi_tstate_t *soc_get_tss_table(int *entries)
 {
 	*entries = 0;
 	return NULL;