b43: Kconfig: let config B43_BCMA_PIO depends on B43
b43: Kconfig: let config B43_BCMA_PIO depends on B43

Logically, config B43_BCMA_PIO should depend on B43. This also solves
the problem that sub options of b43 driver didn't indent correctly in
make menuconfig's ncurses window.

Signed-off-by: Zhao, Gang <afc9accd6d61593e24a7fa4c4294166f24b95ffb@gmail.com>
Signed-off-by: John W. Linville <2a53bac7a5d324865ef46ec4c38b2c0fba1456b4@tuxdriver.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs