acpigen: Add helpers for common Store operations

Add helpers for some store operations:

Store(INTEGER, NAME) ex: Store (100, SAVE)
Store(INTEGER, OP)   ex: Store (100, Local0)

Change-Id: Ia1b3f451acbfb2fc50180a8dcd96db24d330c946
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46255
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index a3beb10..ee7c90c 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -1243,6 +1243,22 @@
 	acpigen_emit_namestring(dst);
 }
 
+/* Store (src, "namestr") */
+void acpigen_write_store_int_to_namestr(uint64_t src, const char *dst)
+{
+	acpigen_write_store();
+	acpigen_write_integer(src);
+	acpigen_emit_namestring(dst);
+}
+
+/* Store (src, dst) */
+void acpigen_write_store_int_to_op(uint64_t src, uint8_t dst)
+{
+	acpigen_write_store();
+	acpigen_write_integer(src);
+	acpigen_emit_byte(dst);
+}
+
 /* Or (arg1, arg2, res) */
 void acpigen_write_or(uint8_t arg1, uint8_t arg2, uint8_t res)
 {