ARM: mxs: dt: cfa10049: make hogpins grabbed by respective drivers

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
ARM: mxs: dt: cfa10055: make hogpins grabbed by respective drivers

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
ARM: mxs: dt: cfa10057: remove hogpins

Necessary pins are now grabbed by respective drivers. Unecessary hogpins are
simply removed.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>