msm: camera: sensor: Change return code when rejecting packet
When rejecting request that is flushed, return invalid error
desc as opposed to invalid argument.
CRs-Fixed: 3079337
Change-Id: I25ba7c3a9ae62958687a3c2fa69f530397596d0b
Signed-off-by: Karthik Anantha Ram <[email protected]>