Partition hip_hcc into sections

Separate files for different categories of HIP API.
Currently just #include into hip_hcc.cpp

src/hip_misc.cpp

@@ -0,0 +1,60 @@
+
+/**
+ * @return #hipSuccess
+ */
+//---
+hipError_t hipDriverGetVersion(int *driverVersion)
+{
+    HIP_INIT_API(driverVersion);
+
+    if (driverVersion) {
+        *driverVersion = 4;
+    }
+
+    return ihipLogStatus(hipSuccess);
+}
+
+
+
+//-------------------------------------------------------------------------------------------------
+//-------------------------------------------------------------------------------------------------
+// HCC-specific accessor functions:
+
+/**
+ * @return #hipSuccess, #hipErrorInvalidDevice
+ */
+//---
+hipError_t hipHccGetAccelerator(int deviceId, hc::accelerator *acc)
+{
+    std::call_once(hip_initialized, ihipInit);
+
+    ihipDevice_t *d = ihipGetDevice(deviceId);
+    hipError_t err;
+    if (d == NULL) {
+        err =  hipErrorInvalidDevice;
+    } else {
+        *acc = d->_acc;
+        err = hipSuccess;
+    }
+    return ihipLogStatus(err);
+}
+
+
+/**
+ * @return #hipSuccess
+ */
+//---
+hipError_t hipHccGetAcceleratorView(hipStream_t stream, hc::accelerator_view **av)
+{
+    std::call_once(hip_initialized, ihipInit);
+
+    if (stream == hipStreamNull ) {
+        ihipDevice_t *device = ihipGetTlsDefaultDevice();
+        stream = device->_default_stream;
+    }
+
+    *av = &(stream->_av);
+
+    hipError_t err = hipSuccess;
+    return ihipLogStatus(err);
+}