msm: camera: isp: prioritize RUP over EPOCH in bottom half

When epoch comes along with RUP we report bubble as per current state
machine. This was because in camif_bottom_half handler we are handling
EPOCH before RUP. This change prioritize RUP over EPOCH  and EOF over
SOF to handle race.

CRs-Fixed: 2567120
Change-Id: I236bcc44b609f8ef7f963f19d33d46a3d95ba0d2
Signed-off-by: Vikram Sharma <vikramsa@codeaurora.org>