hardware: make hw_get_module return it's status

Signed-off-by: Adrian Negreanu <adrian.m.negreanu@intel.com>
fbdev: check return value of hw_get_module

Signed-off-by: Adrian Negreanu <adrian.m.negreanu@intel.com>
Merge pull request #52 from groleo/for-upstream

fix hw_get_module signature