Rewrite the code for handling the Broadcom PHY to something that
works. Remove link polling because Broadcom and Yukon don't need it.
When I wrote initial code, didn't have a genesis chipset based
board to test, so it was a non-working guess.
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>

Get rid of definitions for chip versions and PHY chips that
this driver does not support.
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>

Replace inline accessor functions for chip revision and number of ports
with simple structure members.
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>

The inlines and macro's needed some cleanup's and fixes:
 * change name of macro SKGEMAC_REG to SK_REG to better reflect usage
   and fix comments
 * ditto for SK_GEXM_REG -> SK_XMAC_REG and SKGEGMA_REG -> SK_GMA_REG

 * change skge_gm_ to just gm_ since it is just a local function and long
   names look ugly.
 * change skge_xm_ to just xm_
 * fix xm_write32 to write as two u16's with correct byte order
 * fix xm_outaddr to correctly use offset
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>

Cleanup whitespace around if() and switch() and end of lines
Signed-off-by: NStephen Hemminger <shemminger@osdl.org>