i2c: i2c-qcom-geni: Set IEOB for Go tre in a Read transfer

For an I2C GSI read transfer in a non-shared se case, tx descriptor
contains Go tre only. Set the IEOB flag for Go tre so that tx
descriptor is freed when go tre has been serviced.

Change-Id: I42b04ad058907b71ad4a2f2163c87fb734a69fac
Signed-off-by: Vipin Deep Kaur <vkaur@codeaurora.org>