pmic: msm8226: Clear PMIC watchdog after setting dload mode

The PMIC watchdog should be cleared before rebooting into emergency
download mode, otherwise PMIC will reset due to timeout.

Change-Id: I659ed4ba4464a39abbe381c9e5e1ab8a610ff204
diff --git a/dev/pmic/pm8x41/include/pm8x41_hw.h b/dev/pmic/pm8x41/include/pm8x41_hw.h
index c8c83ce..9239ce7 100644
--- a/dev/pmic/pm8x41/include/pm8x41_hw.h
+++ b/dev/pmic/pm8x41/include/pm8x41_hw.h
@@ -72,6 +72,7 @@
 #define PON_RESIN_N_RESET_S2_CTL              0x846  /* bit 7: S2_RESET_EN, bit 0:3 : RESET_TYPE  */
 #define PON_PS_HOLD_RESET_CTL                 0x85A  /* bit 7: S2_RESET_EN, bit 0:3 : RESET_TYPE  */
 #define PON_PS_HOLD_RESET_CTL2                0x85B
+#define PMIC_WD_RESET_S2_CTL2                 0x857
 
 /* PON Peripheral register bit values */
 #define RESIN_ON_INT_BIT                      1