SWDEV-286739 - Support hipDeviceAttributeWallClockRate

Part 3: Add missing declaration of wall_clock64() to fix
compiling issue in device code.
Add querying hipDeviceAttributeWallClockRate.

Change-Id: Ie54771c2f58eeaacdc0248bc116ef193f99eb9b9

hipamd/src/hip_device_runtime.cpp

@@ -195,6 +195,9 @@ hipError_t hipDeviceGetAttribute(int* pi, hipDeviceAttribute_t attr, int device)
   case hipDeviceAttributeClockRate:
     *pi = prop.clockRate;
     break;
+  case hipDeviceAttributeWallClockRate:
+    *pi = g_devices[device]->devices()[0]->info().wallClockFrequency_;
+    break;
   case hipDeviceAttributeMemoryClockRate:
     *pi = prop.memoryClockRate;
     break;