drm/i915: Fix declaration of intel_gmbus_{is_forced_bit/is_port_falid}
drm/i915: Fix declaration of intel_gmbus_{is_forced_bit/is_port_falid}

Description:
intel_gmbus_is_forced_bit is no extern as its body is right below.
Likewise for intel_gmbus_is_port_valid.

This fixes a compilation issue with clang. An initial version of this patch
was developed by PaX Team <pageexec at freemail.hu>.
This is respin of this patch.

20130509: v2: (re-)add inline upon request.

Signed-off-by: Jan-Simon Möller <36ded0fe241474e14ca49d9021f8ba3a70d78d60@gmx.de>
CC: 79082de0c93349f717971d409a005388d1854a7c@freemail.hu
CC: c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch
CC: f2295d84e358395675bc8031be58672073ae065e@linux.ie
CC: 3bdb751c0325ad49637e109aee01945d1dd19dd5@lists.freedesktop.org
CC: e29a046d56d20477d35c94c7163db1056870c39f@lists.freedesktop.org
CC: 2578944098299abf708b08eff6fcf60565553586@vger.kernel.org
[danvet: Bikeshed commit message.]
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs