drm/i915/glk: Add a IS_GEN9_LP() macro

Broxton and Geminilake are both gen9lp platforms. To avoid adding
IS_GEMINILAKE() checks everywhere alongside the IS_BROXTON() ones, add a
IS_GEN9_LP() macro.

v2: Rename macro parameter to dev_priv. (Joonas)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drivers/gpu/drm/i915/i915_pci.c

@@ -345,6 +345,7 @@ static const struct intel_device_info intel_skylake_gt3_info = {
 
 #define GEN9_LP_FEATURES \
 	.gen = 9, \
+	.is_lp = 1, \
 	.has_hotplug = 1, \
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, \
 	.num_pipes = 3, \