b43: add 'struct b43_wl' missing declaration
b43: add 'struct b43_wl' missing declaration

'struct b43_wl' declaration is missing at 'leds.h'.
It should be declared to avoid getting some GCC warnings at 'b43_leds_unregister'.

Signed-off-by: Miguel Botón <6a3320a32e9c474f6d06e1dbbd0f69963a95cba1@gmail.com>
Signed-off-by: John W. Linville <2a53bac7a5d324865ef46ec4c38b2c0fba1456b4@tuxdriver.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs