vulkan: increase coopmat2 mul_mat_id tile size

Author: jeffbolznv

ggml/src/ggml-vulkan/ggml-vulkan.cpp

@@ -1946,10 +1946,10 @@ static void ggml_vk_load_shaders(vk_device& device) {
         s_mmq_wg_denoms_k = { 32,  32, 1 };
 
         // spec constants and tile sizes for quant matmul_id
-        l_warptile_mmqid = { 256, 128, 64, 16, 0 };
+        l_warptile_mmqid = { 256, 128, 128, 16, 0 };
         m_warptile_mmqid = { 256, 128, 64, 16, 0 };
         s_warptile_mmqid = { 256, 128, 64, 16, 0 };
-        l_mmqid_wg_denoms = { 128, 64, 1 };
+        l_mmqid_wg_denoms = { 128, 128, 1 };
         m_mmqid_wg_denoms = { 128, 64, 1 };
         s_mmqid_wg_denoms = { 128, 64, 1 };