staging: xillybus: Use devm_ API on probe and remove

Suggested-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/staging/xillybus/xillybus.h
Simple merge

diff --cc drivers/staging/xillybus/xillybus_core.c
Simple merge

diff --cc drivers/staging/xillybus/xillybus_of.c
Simple merge

diff --cc drivers/staging/xillybus/xillybus_pcie.c
Simple merge