slimbus: Reset data channels for a controller when framer reboots

Framer is responsible for clocking slimbus, and when it reboots, state
of all associated data channels is reset to be consistent with HW
state.

Change-Id: Ie74ace2b20ad6c255440ff6ce593f7d5503bf388
Signed-off-by: Sagar Dharia <sdharia@codeaurora.org>