ARM: pm: mach-exynos4: cleanup s3c_cpu_save

s3c_cpu_save does not need to save any registers with the new
cpu_suspend calling convention.  Remove these redundant instructions.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-exynos4/sleep.S

@@ -40,11 +40,8 @@
 	 */
 
 ENTRY(s3c_cpu_save)
-
-	stmfd	sp!, { r3 - r12, lr }
 	adr	r3, BSYM(exynos4_finish_suspend)
-	bl	cpu_suspend
-	ldmfd	sp!, { r3 - r12, pc }
+	b	cpu_suspend
 
 exynos4_finish_suspend:
 	ldr	r0, =pm_cpu_sleep