drm/amdgpu: fix file permissions on some files

drivers/gpu/drm/amd/include/asic_reg/clk/clk_11_0_1_offset.h

...ers/gpu/drm/amd/include/asic_reg/clk/clk_11_0_1_sh_mask.h

drivers/gpu/drm/amd/include/asic_reg/dcn/dcn_2_0_3_offset.h

drivers/gpu/drm/amd/include/asic_reg/dcn/dcn_2_0_3_sh_mask.h

...ers/gpu/drm/amd/include/asic_reg/dpcs/dpcs_2_0_3_offset.h

...rs/gpu/drm/amd/include/asic_reg/dpcs/dpcs_2_0_3_sh_mask.h