drivers: mfd: Support for rmmod of wcd9xxx-core

Remove child devices of wcd9xxx-core at device
exit. Add removal of irq handles and data on
irq exit.

CRs-fixed: 2092930
Change-Id: Ifbc685f2613fabc9a85ff81bea4707263e3cfe94
Signed-off-by: Karthikeyan Mani <kmani@codeaurora.org>
2 files changed