drm/amdgpu: adjust fw_name string length for toc

Adjust toc fw_name string length to PSP_FW_NAME_LEN.
Signed-off-by: Lang Yu <lang.yu@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -2985,7 +2985,7 @@ int psp_init_toc_microcode(struct psp_context *psp,
 			   const char *chip_name)
 {
 	struct amdgpu_device *adev = psp->adev;
-	char fw_name[30];
+	char fw_name[PSP_FW_NAME_LEN];
 	const struct psp_firmware_header_v1_0 *toc_hdr;
 	int err = 0;