[media] OMAP_VOUT: CLEANUP: Move generic functions and macros to common files

Move the inline functions rotate_90_or_270(), rotation_enabled(), and
calc_rotation() from omap_vout.c to omap_voutdef.h.

Move the independent functions omap_vout_alloc_buffer() and
omap_vout_free_buffer() to omap_voutlib.c.

Remove extern identifier from function definitions in omap_voutlib.h

Add static identifier to functions that are used locally in omap_vout.c

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/omap/omap_voutlib.h b/drivers/media/video/omap/omap_voutlib.h
index a60b16e..e51750a 100644
--- a/drivers/media/video/omap/omap_voutlib.h
+++ b/drivers/media/video/omap/omap_voutlib.h
@@ -12,23 +12,25 @@
 #ifndef OMAP_VOUTLIB_H
 #define OMAP_VOUTLIB_H
 
-extern void omap_vout_default_crop(struct v4l2_pix_format *pix,
+void omap_vout_default_crop(struct v4l2_pix_format *pix,
 		struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop);
 
-extern int omap_vout_new_crop(struct v4l2_pix_format *pix,
+int omap_vout_new_crop(struct v4l2_pix_format *pix,
 		struct v4l2_rect *crop, struct v4l2_window *win,
 		struct v4l2_framebuffer *fbuf,
 		const struct v4l2_rect *new_crop);
 
-extern int omap_vout_try_window(struct v4l2_framebuffer *fbuf,
+int omap_vout_try_window(struct v4l2_framebuffer *fbuf,
 		struct v4l2_window *new_win);
 
-extern int omap_vout_new_window(struct v4l2_rect *crop,
+int omap_vout_new_window(struct v4l2_rect *crop,
 		struct v4l2_window *win, struct v4l2_framebuffer *fbuf,
 		struct v4l2_window *new_win);
 
-extern void omap_vout_new_format(struct v4l2_pix_format *pix,
+void omap_vout_new_format(struct v4l2_pix_format *pix,
 		struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop,
 		struct v4l2_window *win);
+unsigned long omap_vout_alloc_buffer(u32 buf_size, u32 *phys_addr);
+void omap_vout_free_buffer(unsigned long virtaddr, u32 buf_size);
 #endif	/* #ifndef OMAP_VOUTLIB_H */