char: constify of_device_id array

of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/char/hw_random/pasemi-rng.c
Simple merge

diff --cc drivers/char/hw_random/powernv-rng.c
Simple merge

diff --cc drivers/char/hw_random/ppc4xx-rng.c
Simple merge

diff --cc drivers/char/ipmi/ipmi_si_intf.c
Simple merge

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