dt-bindings: clock: Add GDSC in SDX55 GCC

Add GDSC instances in SDX55 GCC block.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201126072844.35370-6-manivannan.sadhasivam@linaro.orgAcked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

include/dt-bindings/clock/qcom,gcc-sdx55.h

@@ -109,4 +109,9 @@
 #define GCC_USB3PHY_PHY_BCR					13
 #define GCC_USB_PHY_CFG_AHB2PHY_BCR				14
 
+/* GCC power domains */
+#define USB30_GDSC						0
+#define PCIE_GDSC						1
+#define EMAC_GDSC						2
+
 #endif