drm/i915: add yesno utility function

Add a common function to return "yes" or "no" string based on the
argument, and drop the local versions of it.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -46,11 +46,6 @@ enum {
 	PINNED_LIST,
 };
 
-static const char *yesno(int v)
-{
-	return v ? "yes" : "no";
-}
-
 /* As the drm_debugfs_init() routines are called before dev->dev_private is
  * allocated we need to hook into the minor for release. */
 static int

drivers/gpu/drm/i915/i915_drv.h

@@ -106,6 +106,11 @@
 	unlikely(__ret_warn_on);					\
 })
 
+static inline const char *yesno(bool v)
+{
+	return v ? "yes" : "no";
+}
+
 enum pipe {
 	INVALID_PIPE = -1,
 	PIPE_A = 0,

drivers/gpu/drm/i915/i915_gpu_error.c

@@ -30,11 +30,6 @@
 #include <generated/utsrelease.h>
 #include "i915_drv.h"
 
-static const char *yesno(int v)
-{
-	return v ? "yes" : "no";
-}
-
 static const char *ring_str(int ring)
 {
 	switch (ring) {