sh: extend INTC with force_disable

Extend the shared INTC code with force_disable support to
allow keeping mask bits statically disabled. Needed for
SDHI support to mask out unsupported interrupt sources.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

include/linux/sh_intc.h

@@ -72,6 +72,7 @@ struct intc_hw_desc {
 struct intc_desc {
 	char *name;
 	intc_enum force_enable;
+	intc_enum force_disable;
 	struct intc_hw_desc hw;
 };