linux-phytec-ti

mfd: Update wm8994 active device checks for WM1811

This didn't go in as part of the original MFD patch for WM1811 due to
cross tree issues.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>