tty: serial: 8250_core: restore the LCR register in set_sleep
tty: serial: 8250_core: restore the LCR register in set_sleep

In ST16650V2 based serial uarts, while initalizing the PM state,
LCR registers are being initialized to 0 in serial8250_set_sleep().
If console port is already initialized and being used, this will
throws garbage in the console.

Signed-off-by: Sudhir Sreedharan <a581d538cd5343bfc07bd92a600adf8c9c4e7976@mvista.com>
Reviewed-by: Peter Hurley <4b8373d016f277527198385ba72fda0feb5da015@hurleysoftware.com>
Tested-by: Kevin Hilman <f9849b02abe18c1ece6bd40346458ed53f49d31b@linaro.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs