i2c-msm-v2: disable clock after disabling IRQ

Disabling the clock before disabling the IRQ may cause
unlocked access by the unhandled IRQ generated as a
result of a seconday error during SW reset.

Change-Id: I42ab2df6d81f20bdd5884bb93eb0d19a1f36be09
Signed-off-by: Ankit Gupta <ankgupta@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>