dev: pmic: add mvs support

Add support for MVS1 to enable HDMI

Change-Id: I39b272f34b07a37a9889d139e24148f4a6b3542c
diff --git a/dev/pmic/pm8x41/include/pm8x41_hw.h b/dev/pmic/pm8x41/include/pm8x41_hw.h
index 9d05219..db4473c 100644
--- a/dev/pmic/pm8x41/include/pm8x41_hw.h
+++ b/dev/pmic/pm8x41/include/pm8x41_hw.h
@@ -99,6 +99,10 @@
 #define MPP_MODE_CTL_MODE_SHIFT               4
 #define MPP_EN_CTL_ENABLE_SHIFT               7
 
+/* MVS registers */
+#define MVS_EN_CTL                            0x46
+#define MVS_EN_CTL_ENABLE_SHIFT               7
+
 void pm8x41_reg_write(uint32_t addr, uint8_t val);
 uint8_t pm8x41_reg_read(uint32_t addr);