drm/print: Move kerneldoc next to definition

kerneldoc expects the comment next to definitions, otherwise it can't
pick up exported vs. internal stuff.

This fixes a warning from the doc build done with:

$ make DOCBOOKS="" htmldocs

Fixes: d8187177b0b1 ("drm: add helper for printing to log or seq_file")
Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161114115825.22050-8-daniel.vetter@ffwll.ch

Documentation/gpu/drm-internals.rst

@@ -366,7 +366,7 @@ Printer
 .. kernel-doc:: include/drm/drm_print.h
    :internal:
 
-.. kernel-doc:: include/drm/drm_print.h
+.. kernel-doc:: drivers/gpu/drm/drm_print.c
    :export:
 
 

drivers/gpu/drm/drm_print.c

@@ -40,6 +40,11 @@ void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf)
 }
 EXPORT_SYMBOL(__drm_printfn_info);
 
+/**
+ * drm_printf - print to a &drm_printer stream
+ * @p: the &drm_printer
+ * @f: format string
+ */
 void drm_printf(struct drm_printer *p, const char *f, ...)
 {
 	struct va_format vaf;

include/drm/drm_print.h

@@ -74,11 +74,6 @@ struct drm_printer {
 void __drm_printfn_seq_file(struct drm_printer *p, struct va_format *vaf);
 void __drm_printfn_info(struct drm_printer *p, struct va_format *vaf);
 
-/**
- * drm_printf - print to a &drm_printer stream
- * @p: the &drm_printer
- * @f: format string
- */
 void drm_printf(struct drm_printer *p, const char *f, ...);