sh: sh7724: use runtime PM implementation, common with arm/mach-shmobile

Switch sh7724 to a runtime PM implementation, common with ARM-based
sh-mobile platforms.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/Makefile b/arch/sh/kernel/cpu/Makefile
index ae95935..b937f1a 100644
--- a/arch/sh/kernel/cpu/Makefile
+++ b/arch/sh/kernel/cpu/Makefile
@@ -18,4 +18,7 @@
 obj-$(CONFIG_SH_ADC)		+= adc.o
 obj-$(CONFIG_SH_CLK_CPG_LEGACY)	+= clock-cpg.o
 
-obj-y	+= irq/ init.o clock.o fpu.o hwblk.o proc.o
+obj-y	+= irq/ init.o clock.o fpu.o proc.o
+ifneq ($(CONFIG_CPU_SUBTYPE_SH7724),y)
+obj-y	+= hwblk.o
+endif