drm/amd/pm: Fix spelling mistake "firwmare" -> "firmware"

There is a spelling mistake in a dev_err error message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

@@ -311,7 +311,7 @@ static int smu_v13_0_get_pptable_from_firmware(struct smu_context *smu, void **t
 	version_major = le16_to_cpu(hdr->header.header_version_major);
 	version_minor = le16_to_cpu(hdr->header.header_version_minor);
 	if (version_major != 2) {
-		dev_err(adev->dev, "Unsupported smu firwmare version %d.%d\n",
+		dev_err(adev->dev, "Unsupported smu firmware version %d.%d\n",
 			version_major, version_minor);
 		return -EINVAL;
 	}