drm/amdgpu: fix incorrect comment

It should be one copy-paste typo.
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.h

@@ -26,4 +26,4 @@
 
 int amdgpu_fru_get_product_info(struct amdgpu_device *adev);
 
-#endif  // __AMDGPU_PRODINFO_H__
+#endif  // __AMDGPU_FRU_EEPROM_H__