drm/i915/mchbar: include intel_mchbar_regs.h from intel_mchbar.h

As an exception to the rule of not including unnecessary headers from
headers, include intel_mchbar_regs.h from intel_mchbar.h. In order to
use the interfaces in intel_mchbar.h you will always have to include the
registers anyway, so the includes are in pairs everywhere. There is zero
asymmetry. Simplify.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/e44dc2daf3fc39d02c3f598c323caa3c08a54304.1775590536.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/i9xx_wm.c

@@ -20,7 +20,6 @@
 #include "intel_dram.h"
 #include "intel_fb.h"
 #include "intel_mchbar.h"
-#include "intel_mchbar_regs.h"
 #include "intel_wm.h"
 #include "skl_watermark.h"
 #include "vlv_sideband.h"

drivers/gpu/drm/i915/display/intel_bw.c

@@ -16,7 +16,6 @@
 #include "intel_display_utils.h"
 #include "intel_dram.h"
 #include "intel_mchbar.h"
-#include "intel_mchbar_regs.h"
 #include "intel_parent.h"
 #include "skl_watermark.h"
 

drivers/gpu/drm/i915/display/intel_cdclk.c

@@ -42,7 +42,6 @@
 #include "intel_display_wa.h"
 #include "intel_dram.h"
 #include "intel_mchbar.h"
-#include "intel_mchbar_regs.h"
 #include "intel_parent.h"
 #include "intel_pci_config.h"
 #include "intel_plane.h"

drivers/gpu/drm/i915/display/intel_display_power.c

@@ -25,7 +25,6 @@
 #include "intel_dmc.h"
 #include "intel_dram.h"
 #include "intel_mchbar.h"
-#include "intel_mchbar_regs.h"
 #include "intel_parent.h"
 #include "intel_pch_refclk.h"
 #include "intel_pmdemand.h"

drivers/gpu/drm/i915/display/intel_dram.c

@@ -15,7 +15,6 @@
 #include "intel_display_regs.h"
 #include "intel_dram.h"
 #include "intel_mchbar.h"
-#include "intel_mchbar_regs.h"
 #include "intel_parent.h"
 #include "vlv_sideband.h"
 

drivers/gpu/drm/i915/display/intel_mchbar.c

@@ -10,7 +10,6 @@
 #include "intel_de.h"
 #include "intel_display_core.h"
 #include "intel_mchbar.h"
-#include "intel_mchbar_regs.h"
 
 static bool has_mchbar_mirror(struct intel_display *display)
 {

drivers/gpu/drm/i915/display/intel_mchbar.h

@@ -9,6 +9,7 @@
 #include <linux/types.h>
 
 #include "i915_reg_defs.h"
+#include "intel_mchbar_regs.h"
 
 struct intel_display;