mcs: add 4/5-wire detect on EIM_A25 (gp5:2 or 130)

Old boards used SD3_DAT4 (gp7:1/193) and high meant 5-wire.
New boards have weak pull-down on gpio 193, and low on
gpio 130 means 5-wire, so the test should be:

	high on gpio193 or low on gpio130 means 5-wire

Weak pull-up on gpio130 supplies default for old boards.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>