i2c: busses: i2c-qcom-geni: Fix error decoding logic

Error masks to decode the errors reported by Serial Engine in GSI mode
is incorrect.

Fix the error decoding logic in GSI mode and also decode the error
in TX channel.

CRs-Fixed: 2136697
Change-Id: Ieb1464c69d9d2fc0b3f8542d1ea8bfe8d547850b
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@codeaurora.org>