src/acpi: Add missing <types.h>

Change-Id: Iec78183b43ea26d9de14e0ce28eef6fc0361cc95
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50555
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lance Zhao
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index 5cc6a4e..4d9395f 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -21,6 +21,7 @@
 #include <device/pci_def.h>
 #include <device/pci_type.h>
 #include <device/soundwire.h>
+#include <types.h>
 
 static char *gencurrent;