MIPS: Idle: Consolidate all declarations in <asm/idle.h>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
index a0233a2..8be4e85 100644
--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
@@ -19,6 +19,7 @@
 #include <linux/clk.h>
 
 #include <asm/bootinfo.h>
+#include <asm/idle.h>
 #include <asm/time.h>		/* for mips_hpt_frequency */
 #include <asm/reboot.h>		/* for _machine_{restart,halt} */
 #include <asm/mips_machine.h>