include/acpi/acpi_crat.h: Add missing <stdint.h>

Change-Id: Ic157cd820be204035706f8074dd6dbcb95c0f04f
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>

src/include/acpi/acpi_crat.h

@@ -3,6 +3,8 @@
 #ifndef __ACPI_CRAT_H__
 #define __ACPI_CRAT_H__
 
+#include <stdint.h>
+
 enum crat_entry_type {
 	CRAT_HSA_PROC_UNIT_TYPE,
 	CRAT_MEMORY_TYPE,