Bump MLIR commit pointer to add align-tiling fix (#2170)

In addition, since the bug in the sigmoid test is resolved, also uncomment that temporary disable.

mlir-requirements.txt

@@ -21,4 +21,4 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 #####################################################################################
-ROCmSoftwarePlatform/rocMLIR@3657f509bfed86bb79d5c6e24aa237e48f09f9f3 -DBUILD_FAT_LIBROCKCOMPILER=On
+ROCmSoftwarePlatform/rocMLIR@2c519c48eaa278d13e6c40bc0941119826d71512 -DBUILD_FAT_LIBROCKCOMPILER=On

src/targets/gpu/fuse_mlir.cpp

@@ -235,8 +235,7 @@ struct find_mlir_fused_ops
             "log",
             "recip",
             "rsqrt",
-            // There are bugs in MLIR right now for models using sigmoid so disable it for now
-            // "sigmoid",
+            "sigmoid",
             "softmax",
             "tanh",
         };