ARM: shmobile: r8a73a4: Add IRQC clock to device tree

Link the external IRQ controllers irqc0 and irqc1 to the IRQC module
clock, so they can be power managed using that clock.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
[horms: corrected typo in changelog to refer to r8a73a4]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/include/dt-bindings/clock/r8a73a4-clock.h b/include/dt-bindings/clock/r8a73a4-clock.h
index 9a4b4c9..dd11ecd 100644
--- a/include/dt-bindings/clock/r8a73a4-clock.h
+++ b/include/dt-bindings/clock/r8a73a4-clock.h
@@ -54,6 +54,7 @@
 #define R8A73A4_CLK_IIC3	11
 #define R8A73A4_CLK_IIC4	10
 #define R8A73A4_CLK_IIC5	9
+#define R8A73A4_CLK_IRQC	7
 
 /* MSTP5 */
 #define R8A73A4_CLK_THERMAL	22