[PATCH] Serial: Ensure error paths are marked with unlikely()

Ensure ARM serial driver error paths are marked with the
unlikely() compiler hint.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

diff --cc drivers/serial/21285.c
Simple merge

diff --cc drivers/serial/amba-pl010.c
Simple merge

diff --cc drivers/serial/amba-pl011.c
Simple merge

diff --cc drivers/serial/clps711x.c
Simple merge

diff --cc drivers/serial/s3c2410.c
Simple merge

diff --cc drivers/serial/serial_lh7a40x.c
Simple merge