i2c: i2c-msm-geni: Reinitialize the variables after every transfer

Reinitialize fifo cur_wr, cur_rd and gi2c->xfer for every transfer.
Add "MSM_GPI_QUP_FW_ERROR" event to callback event list. Dump GSI
registers in case of Channel RESET failure.

Change-Id: I243fb140d663fccd79676bdc6760702809fb4d68
Signed-off-by: Mukesh Kumar Savaliya <msavaliy@codeaurora.org>
Signed-off-by: Vipin Deep Kaur <vkaur@codeaurora.org>