greybus: arche-apb-ctrl: Do not bring APB out of reset in probe

With addition of handshaking between AP <=> SVC, driver
brings out APB out of reset only on reception of WAKE_MOD
signal from SVC. So remove the deassertion from probe.

Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>