add on the fly gpu volt table

Source/hoc-clk/common/include/hocclk/ipc.h

@@ -69,4 +69,9 @@ typedef struct
 {
     HocClkModule module;
     uint32_t maxCount;
-} HocClkIpc_GetFreqList_Args;
+} HocClkIpc_GetFreqList_Args;
+
+typedef struct {
+    u32 voltage;
+    u32 hz;
+} HocClkIpc_RequestGpuVoltage_Args;