staging: rtl8192e: rtl8192_phy_checkBBAndRF(): Don't check MAC

This function never supported checking of MAC block.
Instead of printing several warnings - print it once and exit.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>