pmic-voter: move to common header location

pmic-voter.h needs to be used in the qcom-tadc driver which resides
outside of the power/supply/qcom location. Move it to include/linux.

Change-Id: I5079a8504573da2a800fd458ef9aa5931056d8c2
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
diff --git a/drivers/power/supply/qcom/smb-lib.c b/drivers/power/supply/qcom/smb-lib.c
index e67bf27..d3e9faf 100644
--- a/drivers/power/supply/qcom/smb-lib.c
+++ b/drivers/power/supply/qcom/smb-lib.c
@@ -21,7 +21,7 @@
 #include "smb-lib.h"
 #include "smb-reg.h"
 #include "storm-watch.h"
-#include "pmic-voter.h"
+#include <linux/pmic-voter.h>
 
 #define smblib_err(chg, fmt, ...)		\
 	pr_err("%s: %s: " fmt, chg->name,	\