Tile Engine support for gfx950 (#4592)

## Motivation

This PR adds support for the gfx950 GPU architecture to the Tile Engine
in Composable Kernel library, focusing on GEMM operations with FP8 and
BF8 data types.

## Technical Details

Added gfx950-specific MFMA warp GEMM implementations with conditional
compilation.
Updated default GEMM configuration parameters for tile sizes and warp
configurations.
Added Jenkins CI pipeline stage for testing TILE_ENGINE_GEMM on gfx950
hardware.

## Test Plan

Tile engine itself is a benchmarking utility, so if it passes the CI it
will be tested automatically.

## Test Result

Tile engine itself is a benchmarking utility, so if it passes the CI it
will be tested automatically.

## Submission Checklist

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

---------

Co-authored-by: Thrupti Raj Lakshmana Gowda<ThruptiRaj.LakshmanaGowda@amd.com>
Co-authored-by: Thomas Ning <Thomas.Ning@amd.com>

tile_engine/ops/gemm/gemm_preshuffle/configs/user_provided_config.json

@@ -2,7 +2,7 @@
   "tile_config": {
     "tile_m": {
       "values": [
-        64
+      128
       ]
     },
     "tile_n": {
@@ -12,17 +12,17 @@
     },
     "tile_k": {
       "values": [
-        192
+        64
       ]
     },
     "warp_m": {
       "values": [
-        2
+        4
       ]
     },
     "warp_n": {
       "values": [
-        2
+        1
       ]
     },
     "warp_k": {
@@ -32,17 +32,17 @@
     },
     "warp_tile_m": {
       "values": [
-        16
+        32
       ]
     },
     "warp_tile_n": {
       "values": [
-        16
+        32
       ]
     },
     "warp_tile_k": {
       "values": [
-        32
+        64
       ]
     }
   },
@@ -59,8 +59,7 @@
     },
     "epilogue": {
       "values": [
-        "default",
-        "cshuffle"
+        "default"
       ]
     },
     "pad_m": {
@@ -80,7 +79,7 @@
     },
     "persistent": {
         "values": [
-            true
+            false
        ]
     }
   },