drm/i915/sbi: move intel_sbi.[ch] under display/

The LPT/WPT SBI is arguably part of south display, and it's only used by
intel_pch_refclk.c anyway. Move it under display/.

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/341268d633e9705bc582f1cc985dc4554e39d87d.1748343520.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/Makefile

@@ -40,7 +40,6 @@ i915-y += \
 	intel_pcode.o \
 	intel_region_ttm.o \
 	intel_runtime_pm.o \
-	intel_sbi.o \
 	intel_step.o \
 	intel_uncore.o \
 	intel_uncore_trace.o \
@@ -288,6 +287,7 @@ i915-y += \
 	display/intel_pmdemand.o \
 	display/intel_psr.o \
 	display/intel_quirks.o \
+	display/intel_sbi.o \
 	display/intel_sprite.o \
 	display/intel_sprite_uapi.o \
 	display/intel_tc.o \

drivers/gpu/drm/i915/i915_driver.c

@@ -63,6 +63,7 @@
 #include "display/intel_overlay.h"
 #include "display/intel_pch_refclk.h"
 #include "display/intel_pps.h"
+#include "display/intel_sbi.h"
 #include "display/intel_sprite_uapi.h"
 #include "display/skl_watermark.h"
 
@@ -109,7 +110,6 @@
 #include "intel_pci_config.h"
 #include "intel_pcode.h"
 #include "intel_region_ttm.h"
-#include "intel_sbi.h"
 #include "vlv_iosf_sb.h"
 #include "vlv_suspend.h"