opencl: Adreno optimization for MoE - MxFP4 (#22301)

* MoE Mxfp4 CLC kernel added, router reorder on GPU

* Pass test-backend-ops for MoE mxfp4 Adreno CLC

* remove putenv in llama-model.cpp

* fix indent style and whitespace

* opencl: remove unnecessary headers

* opencl: do not save cl_program objects

* opencl: remove unnecessary assert

* fix precision issue

---------

Co-authored-by: Li He <lih@qti.qualcomm.com>

ggml/src/ggml-opencl/kernels/moe_reorder_b.cl

@@ -0,0 +1,30 @@
+#pragma OPENCL EXTENSION cl_khr_fp16 : enable
+
+#define QK4_0 32
+
+kernel void kernel_moe_reorder_b(
+    global float4 * src,
+    global uint * router,
+    global float4 * dst,
+    global int * total_tiles,
+    uint K,
+    ushort map_ratio,
+    uint tile_size
+) {
+    uint k_4 = get_global_id(0);
+    uint post_router_idx = get_global_id(1);
+
+    if ((k_4 >= (K / 4)) || (post_router_idx >= total_tiles[0] * tile_size)) {
+        return;
+    }
+
+    uint router_idx = router[post_router_idx];
+
+    float4 out = (float4)(0);
+    if (router_idx != 0xFFFFFFFF) {
+        ushort activation_idx = router_idx / map_ratio;
+        out = src[activation_idx * K / 4 + k_4];
+    }
+
+    dst[post_router_idx * K / 4 + k_4] = out;
+}