[PATCH] bcm43xx: Fix machine check on PPC for version 1 PHY

Recent changes in the specs that were introduced in commit
740ac4fb were incorrect and resulted in machine check
errors on the PPC architecture for G PHY's with a revision number equal to 1. The
two offending changes are reverted.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>