drm/i915: Compact device info access by a small re-ordering

More effort to align members on 4-byte boundary helps with
code size a tiny bit:

    text           data     bss     dec     hex filename
-1460454          60014    3656 1524124  17419c drivers/gpu/drm/i915/i915.ko
+1460254          60014    3656 1523924  1740d4 drivers/gpu/drm/i915/i915.ko

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170920092701.17963-3-tvrtko.ursulin@linux.intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -852,21 +852,27 @@ enum intel_platform {
 };
 
 struct intel_device_info {
-	u32 display_mmio_offset;
 	u16 device_id;
-	u8 num_pipes;
-	u8 num_sprites[I915_MAX_PIPES];
-	u8 num_scalers[I915_MAX_PIPES];
-	u8 gen;
 	u16 gen_mask;
-	enum intel_platform platform;
+
+	u8 gen;
 	u8 gt; /* GT number, 0 if undefined */
-	u8 ring_mask; /* Rings supported by the HW */
 	u8 num_rings;
+	u8 ring_mask; /* Rings supported by the HW */
+
+	enum intel_platform platform;
+
+	u32 display_mmio_offset;
+
+	u8 num_pipes;
+	u8 num_sprites[I915_MAX_PIPES];
+	u8 num_scalers[I915_MAX_PIPES];
+
 #define DEFINE_FLAG(name) u8 name:1
 	DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG);
 #undef DEFINE_FLAG
 	u16 ddb_size; /* in blocks */
+
 	/* Register offsets for the various display pipes and transcoders */
 	int pipe_offsets[I915_MAX_TRANSCODERS];
 	int trans_offsets[I915_MAX_TRANSCODERS];