MLK-19942: mxc-jpeg: Workaround for "Instance released before end of transaction"

The context is released after FRM_DONE interrupt is received,
but for some small images, after FRM_DONE, a HALF_BUF interrupt
keeps coming, and cannot be cleared.
A soft reset helps (resets only the decoder internal state, not registers).

Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>