meson: Build i915

Build i915 with meson. More or less copied from i965, with all
the unneeded cruft removed, and the libdrm_intel dependency added.

Cc: Dylan Baker <dylan@pnwbakers.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
4 files changed