[PATCH] fbdev: fbmem: mark registered_fb static

[Min-Hua Chen]

>Hi Helge,
>
>>num_registered_fb is still used in:
>>drivers/staging/olpc_dcon/olpc_dcon.c:  if (num_registered_fb < 1) {
>>
>>Helge
>
>Thanks, you're right, num_registered_fb is still being used.
>I'll check this patch and submit v2.

Update:

num_registered_fb and registered_fb are used by olpc_dcon.c, However,
olpc_dcon.c has been marked as broken [1].

I do not have the knowledge to remove the dependency of fbdev from olpc_dcon.c,
I'll leave num_registered_fb and registered_fb as-is.

[1] https://lore.kernel.org/all/20220609223424.907174-1-javierm@redhat.com/

>thanks,
>Min-Hua
>