[Intel-gfx] Multiple declarations for intel_fbc_enabled

[Ed Maste]

A FreeBSD developer discovered that intel_fbc_enabled has a
declaration in two headers:

sys/dev/drm2/i915/i915_drv.h:extern bool intel_fbc_enabled(struct
drm_device *dev);
sys/dev/drm2/i915/intel_drv.h:extern bool intel_fbc_enabled(struct
drm_device *dev);

We have a slightly older version of the i915 driver on FreeBSD, but I
see that this is still the case in Linux (although the "extern" has
been removed from one of them). Commit 85208be added the one in
intel_drv.h and didn't remove the existing one.