diag: Remove dependency on control packet write status

Remove hardware acceleration enable/disable command response
dependency on successful write of passthru control packet on every
peripheral. Failure of writing passthru control on one peripheral
should not hamper enabling hw acceleration on peripherals where
successful write has happened.

Change-Id: Icd97bd8d6e107fada70ee63708c3eb1f9c3fe510
Signed-off-by: Manoj Prabhu B <bmanoj@codeaurora.org>