Add missing texturePitchAlignment member to the hipDeviceProp_t struct. (#1802)

* Add missing texturePitchAlignment member to the hipDeviceProp_t struct.

* Add missing hipDeviceAttributeTexturePitchAlignment enumerator to the hipDeviceAttribute_t enum.

* Initialize texturePitchAlignment to 256. This works for gfx9+, but is technically overaligned in most cases for pre-gfx9.

* Add the texturePitchAlignment property to the NVCC path.

src/hip_device.cpp

@@ -312,9 +312,12 @@ hipError_t ihipDeviceGetAttribute(int* pi, hipDeviceAttribute_t attr, int device
             case hipDeviceAttributeMaxPitch:
                 *pi = prop->memPitch;
                 break;
-	    case hipDeviceAttributeTextureAlignment:
+            case hipDeviceAttributeTextureAlignment:
                 *pi = prop->textureAlignment;
                 break;
+            case hipDeviceAttributeTexturePitchAlignment:
+                *pi = prop->texturePitchAlignment;
+                 break;
             case hipDeviceAttributeKernelExecTimeout:
                 *pi = prop->kernelExecTimeoutEnabled;
                 break;