fix(v2d): reject unaligned bitblit destination origins

[mingjie-wu-spacemit]

V2D_AddBitblitTask uses the destination rectangle as the hardware output crop. A non-16-aligned origin, such as (0, 140) for a 640x360 RGB image in a 640x640 destination, can trigger a V2D hardware error and corrupt the output even when V2D_EndJob returns success.

Reject unaligned destination X/Y origins with V2D_ERR_INVALID_PARAM before queuing the task, log the coordinates and alignment requirement, and document the restriction in the public API. Source rectangle origins are unaffected.

Validation on SpacemiT K3:

• Built the mpp_v2d target from this main-based branch.
• Checked unaligned X, Y, and combined offsets: all return -4; rejected jobs remain empty.
• Checked aligned destinations and an unaligned source origin: validation succeeds.
• Linked the reproduction against the rebuilt V2D object: y=140 is rejected with the expected log; y=0 and y=144 retain zero content and border mismatches.
• git diff --check passes.

[spacemit-robot-ci]

Robot CI AI Review

• PR: fix(v2d): reject unaligned bitblit destination origins #52 fix(v2d): reject unaligned bitblit destination origins
• Project: components/multimedia/mpp
• Commit: 4e2cc950782a

结论：暂无明确问题。

备注：worker-cache review 失败，已回退 baseline review：worker-cache review failed: snode5: fetch base failed: From github.com:spacemit-com/mpp
! [rejected] main -> refs/robot-ci/base/main (non-fast-forward); From github.com:spacemit-com/mpp
! [rejected] main -> refs/robot-ci/base/main (non-fast-forward); hp-probook: sync worker helper failed: ssh: connect to host 10.0.91.193 port 22: No route to host