fbdev: Move declaration of fb_class to <linux/fb.h>

From: Geert Uytterhoeven <[email protected]>

Move the forward declaration of fb_class from drivers/video/console/fbcon.h to <linux/fb.h>, together with the other forward declarations related to drivers/video/fbmem.c.

This kills the following sparse warning:
| drivers/video/fbmem.c:1363:14: warning: symbol 'fb_class' was not declared. Should it be static?

---

 drivers/video/console/fbcon.h |    1 -
 include/linux/fb.h            |    1 +
 2 files changed, 1 insertions(+), 1 deletions(-)

index 71f24e0..8e6ef4b 100644
@@ -176,7 +176,6 @@ extern void fbcon_set_tileops(struct vc_
 #endif
 extern void fbcon_set_bitops(struct fbcon_ops *ops);
 extern int  soft_cursor(struct fb_info *info, struct fb_cursor *cursor);
-extern struct class *fb_class;
 
 #define FBCON_ATTRIBUTE_UNDERLINE 1
 #define FBCON_ATTRIBUTE_REVERSE   2

index c654d0e..6622682 100644
@@ -942,6 +942,7 @@ extern int fb_new_modelist(struct fb_inf
 
 extern struct fb_info *registered_fb[FB_MAX];
 extern int num_registered_fb;
+extern struct class *fb_class;
 
 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 					   u8 *src, u32 s_pitch, u32 height)

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