i2c: qcom-geni: fix spelling mistake "unepxected" -> "unexpected"

There is a spelling mistake in an error message string, fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Akash Asthana <akashast@codeaurora.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>