serial: msm-geni: Always bind before relocation

In preparation for supporting upstream Linux device trees on Qualcomm
platforms, make this the default behavior.

[vzapolskiy: extracted the driver change from a combination with dts changes]
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>