drm/i915: Fix includes and local vars order

Removed duplicate include and fixed comment > 80 chars.

v2: Added newline after system include and between functions

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200522131843.20477-1-stanislav.lisovskiy@intel.com
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 937d91c..b134a1b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -33,6 +33,7 @@
 #include <drm/drm_plane_helper.h>
 
 #include "display/intel_atomic.h"
+#include "display/intel_bw.h"
 #include "display/intel_display_types.h"
 #include "display/intel_fbc.h"
 #include "display/intel_sprite.h"
@@ -43,7 +44,6 @@
 #include "i915_fixed.h"
 #include "i915_irq.h"
 #include "i915_trace.h"
-#include "display/intel_bw.h"
 #include "intel_pm.h"
 #include "intel_sideband.h"
 #include "../../../platform/x86/intel_ips.h"