soc: qcom: glink_pkt: Fix minor version in device creation

'ret' was used to store the minor version obtained from
ida_simple_get. This was overwritten with the return value
of glink_pkt_parse_devicetree. Hence, saving the return
value in 'minor' and passing in this new variable, 'minor'
to create a glink_pkt device.

Change-Id: I5dff8e01e27501171146df782c93d110d6592047
Signed-off-by: Jay Jayanna <jayanna@codeaurora.org>