drm/amdgpu/gfx8: fix CP jump table size

Align to the jump table offset. Fixes hangs on some
systems with GFX PG enabled.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Tested-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -1300,7 +1300,7 @@ static int gfx_v8_0_rlc_init(struct amdgpu_device *adev)
 
 	if ((adev->asic_type == CHIP_CARRIZO) ||
 	    (adev->asic_type == CHIP_STONEY)) {
-		adev->gfx.rlc.cp_table_size = (96 * 5 * 4) + (64 * 1024); /* JT + GDS */
+		adev->gfx.rlc.cp_table_size = ALIGN(96 * 5 * 4, 2048) + (64 * 1024); /* JT + GDS */
 		if (adev->gfx.rlc.cp_table_obj == NULL) {
 			r = amdgpu_bo_create(adev, adev->gfx.rlc.cp_table_size, PAGE_SIZE, true,
 					     AMDGPU_GEM_DOMAIN_VRAM,