msm: lpm_levels: return new idle level to cpuidle framework

Need to return the new idle level to cpuidle framework
but just returned input value argument 'index' which is
not used actually at lpm_cpu_power_select().

CRs-fixed: 601636
Change-Id: Iabd182eeb4fbdc67f4e07b40a1b593471cf8cbdf
Signed-off-by: Anil kumar mamidala <amami@codeaurora.org>
diff --git a/arch/arm/mach-msm/lpm_levels.c b/arch/arm/mach-msm/lpm_levels.c
index a3a2f56..88c246f 100644
--- a/arch/arm/mach-msm/lpm_levels.c
+++ b/arch/arm/mach-msm/lpm_levels.c
@@ -754,7 +754,7 @@
 	do_div(time, 1000);
 	dev->last_residency = (int)time;
 	local_irq_enable();
-	return index;
+	return idx;
 }
 
 static int lpm_suspend_enter(suspend_state_t state)