usb: phy: Add BIAS_CTRL2 register offset as mandatory

BIAS_CTRL2 register is required to be override by QUSB PHY in
some cases. Hence add BIAS_CTRL2 register offset with QUSB PHY
device node on SDM845, and also modify check for to make sure
that all mandatory register offsets are provided.

Change-Id: I845a5a1dd6498a651f77eeab4b146395cfec7336
Signed-off-by: Mayank Rana <mrana@codeaurora.org>
diff --git a/arch/arm64/boot/dts/qcom/sdm845-usb.dtsi b/arch/arm64/boot/dts/qcom/sdm845-usb.dtsi
index 3541a1c..c8f9886 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-usb.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-usb.dtsi
@@ -133,7 +133,8 @@
 			 0x210 /* QUSB2PHY_PWR_CTRL1 */
 			 0x230 /* QUSB2PHY_INTR_CTRL */
 			 0x0a8 /* QUSB2PHY_PLL_CORE_INPUT_OVERRIDE */
-			 0x254>; /* QUSB2PHY_TEST1 */
+			 0x254 /* QUSB2PHY_TEST1 */
+			 0x198>; /* PLL_BIAS_CONTROL_2 */
 
 		qcom,qusb-phy-init-seq =
 			/* <value reg_offset> */
@@ -408,7 +409,8 @@
 			 0x210 /* QUSB2PHY_PWR_CTRL1 */
 			 0x230 /* QUSB2PHY_INTR_CTRL */
 			 0x0a8 /* QUSB2PHY_PLL_CORE_INPUT_OVERRIDE */
-			 0x254>; /* QUSB2PHY_TEST1 */
+			 0x254 /* QUSB2PHY_TEST1 */
+			 0x198>; /* PLL_BIAS_CONTROL_2 */
 
 		qcom,qusb-phy-init-seq =
 			/* <value reg_offset> */