drm/i915: include linux/highmem.h and linux/swap.h where needed

Include linux/highmem.h and linux/swap.h explicitly where needed so we
can drop the linux/i2c.h include from i915_drv.h where it pulled in the
dependencies implicitly.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220303181931.1661767-5-jani.nikula@intel.com

drivers/gpu/drm/i915/gem/i915_gem_context.c

@@ -64,6 +64,7 @@
  *
  */
 
+#include <linux/highmem.h>
 #include <linux/log2.h>
 #include <linux/nospec.h>
 

drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c

@@ -4,8 +4,9 @@
  * Copyright © 2008,2010 Intel Corporation
  */
 
-#include <linux/intel-iommu.h>
 #include <linux/dma-resv.h>
+#include <linux/highmem.h>
+#include <linux/intel-iommu.h>
 #include <linux/sync_file.h>
 #include <linux/uaccess.h>
 

drivers/gpu/drm/i915/gem/i915_gem_object.c

@@ -22,6 +22,7 @@
  *
  */
 
+#include <linux/highmem.h>
 #include <linux/sched/mm.h>
 
 #include <drm/drm_cache.h>

drivers/gpu/drm/i915/gem/selftests/huge_pages.c

@@ -6,6 +6,7 @@
 
 #include <linux/prime_numbers.h>
 #include <linux/string_helpers.h>
+#include <linux/swap.h>
 
 #include "i915_selftest.h"
 

drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c

@@ -4,6 +4,7 @@
  * Copyright © 2016 Intel Corporation
  */
 
+#include <linux/highmem.h>
 #include <linux/prime_numbers.h>
 
 #include "gem/i915_gem_internal.h"

drivers/gpu/drm/i915/gt/intel_ggtt_fencing.c

@@ -3,6 +3,8 @@
  * Copyright © 2008-2015 Intel Corporation
  */
 
+#include <linux/highmem.h>
+
 #include "i915_drv.h"
 #include "i915_reg.h"
 #include "i915_scatterlist.h"

drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c

@@ -5,6 +5,7 @@
 
 #include <linux/bitfield.h>
 #include <linux/firmware.h>
+#include <linux/highmem.h>
 
 #include <drm/drm_cache.h>
 #include <drm/drm_print.h>

drivers/gpu/drm/i915/i915_cmd_parser.c

@@ -25,6 +25,8 @@
  *
  */
 
+#include <linux/highmem.h>
+
 #include <drm/drm_cache.h>
 
 #include "gt/intel_engine.h"

drivers/gpu/drm/i915/i915_drv.h

@@ -34,7 +34,6 @@
 
 #include <asm/hypervisor.h>
 
-#include <linux/i2c.h>
 #include <linux/intel-iommu.h>
 #include <linux/pm_qos.h>
 

drivers/gpu/drm/i915/i915_gpu_error.c

@@ -28,6 +28,7 @@
  */
 
 #include <linux/ascii85.h>
+#include <linux/highmem.h>
 #include <linux/nmi.h>
 #include <linux/pagevec.h>
 #include <linux/scatterlist.h>