Staging: windbond: camelCase should be fixed

(BTW, winbond/README alias winbond/TODO doesn't mention it, but another
(trivial) step is going to be to change variable names and function
names from CamelCase to lower_case spelling.)

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>