ARM: dts: msm: enable SDR104 workaround for SDX20 V2

On SDX20, SDR104 mode might be unstable causing CRC error on
the interface. This is fixed in V2 metal. But still to support
the h/w fix we would need to make sure that retuning is done
whenever clock is ungated.  This patch enables "qcom,sdr104-wa"
property to enable this fix on sdx20 v2.

Change-Id: I5febf311ce246757385565b64767ed8db874d3ed
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>