drm/amdgpu/swsmu: increase size for smu fw_name string

A longer chip name needs more space.

v2: define macro for the length of smu fw name
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h

@@ -31,6 +31,7 @@
 #define SMU_THERMAL_MINIMUM_ALERT_TEMP		0
 #define SMU_THERMAL_MAXIMUM_ALERT_TEMP		255
 #define SMU_TEMPERATURE_UNITS_PER_CENTIGRADES	1000
+#define SMU_FW_NAME_LEN			0x24
 
 struct smu_hw_power_state {
 	unsigned int magic;

drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c

@@ -84,7 +84,7 @@ int smu_v11_0_init_microcode(struct smu_context *smu)
 {
 	struct amdgpu_device *adev = smu->adev;
 	const char *chip_name;
-	char fw_name[30];
+	char fw_name[SMU_FW_NAME_LEN];
 	int err = 0;
 	const struct smc_firmware_header_v1_0 *hdr;
 	const struct common_firmware_header *header;