devon:charger bring up

cannot read usbin voltage
add usbin voltage iio channel

Change-Id: I2ab712b0f4fa532ab836d0b087a70f43f0d4050a
Signed-off-by: longc102 <longc102@motorola.com>
Reviewed-on: https://gerrit.mot.com/2222531
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: <longch99@motorola.com>
Submit-Approved: Jira Key
(cherry picked from commit 2e4a69bb68a6c4dcc045057ef86f324bece327ec)
Reviewed-on: https://gerrit.mot.com/2227479
Reviewed-by: Wei Xu <xuwei9@lenovo.com>
Reviewed-by: Wang Wang <wangwang1@lenovo.com>

include/dt-bindings/iio/qti_power_supply_iio.h

@@ -182,4 +182,5 @@
 #define PSY_IIO_USB_TERMINATION_ENABLED 0x113
 #define PSY_IIO_START_BC12_DETECTION  0x114
 #define PSY_IIO_DETECTION_BC12_READY  0x115
+#define PSY_IIO_READ_USBIN_VOLTAGE  0x116
 #endif /* __QTI_POWER_SUPPLY_IIO_H__ */