dev: qpnp_wled: Enable WLED PSM for AMOLED panels.

Enable WLED PSM (Pulse Skip Mode) for AMOLED panels.

Change-Id: I732e371ceca10569dbd1bc1dc72bfbc6e226fd17
diff --git a/dev/qpnp_wled/include/qpnp_wled.h b/dev/qpnp_wled/include/qpnp_wled.h
index 4ca2379..a71b96d 100644
--- a/dev/qpnp_wled/include/qpnp_wled.h
+++ b/dev/qpnp_wled/include/qpnp_wled.h
@@ -46,6 +46,7 @@
 #define QPNP_WLED_ILIM_REG(b)                  (b + 0x4E)
 #define QPNP_WLED_VLOOP_COMP_RES(b)            (b + 0x55)
 #define QPNP_WLED_VLOOP_COMP_GM(b)             (b + 0x56)
+#define QPNP_WLED_PSM_EN(b)                    (b + 0x5A)
 #define QPNP_WLED_PSM_CTRL(b)                  (b + 0x5B)
 #define QPNP_WLED_TEST4(b)                     (b + 0xE5)
 #define QPNP_WLED_CTRL_SPARE_REG(b)            (b + 0xDF)
diff --git a/dev/qpnp_wled/qpnp_wled.c b/dev/qpnp_wled/qpnp_wled.c
index 9282a7b..10a61b5 100644
--- a/dev/qpnp_wled/qpnp_wled.c
+++ b/dev/qpnp_wled/qpnp_wled.c
@@ -235,6 +235,8 @@
 			0x81);
 		pm8x41_wled_reg_write(QPNP_WLED_PSM_CTRL(wled->ctrl_base),
 			0x83);
+		pm8x41_wled_reg_write(QPNP_WLED_PSM_EN(wled->ctrl_base),
+			0x80);
 
 		rc = qpnp_wled_sec_access(wled, wled->ctrl_base);
 		if (rc)