ARM: dts: omap4-droid4: Fix MMC1 card for detect GPIO and regulator

There's a typo, it should be GPIO176 and not GPIO106.

And it seems I messed up the regulators at some point while trying
to figure out what devices the regulators are used. The correct
regulator for MMC1 is vwlan2.

Fixes: 0d4cb3cc

 ("ARM: dts: Configure regulators for droid 4")
Reported-by: Sebastian Reichel <sre@kernel.org>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Tested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>