[rocm-libraries] ROCm/rocm-libraries#8272 (commit 1c66ecb)

[CK] Padding on K for global load for grouped conv bwd data
 (#8272)

## Motivation

Fix incorrect results caused by lack of padding during global load in
grouped convolution backward data kernel. It is needed since there is no
OOB check for global load.

## Technical Details

Add padding needed for global load which not use OOB check.

## Test Plan

test_grouped_convnd_bwd_data*

## Test Result

Passed locally

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.