Merge branch 'common/serial-rework' into sh-latest

diff --cc arch/sh/kernel/cpu/sh4a/setup-sh7343.c
Simple merge

diff --cc arch/sh/kernel/cpu/sh4a/setup-sh7366.c
Simple merge

diff --cc arch/sh/kernel/cpu/sh4a/setup-sh7722.c
Simple merge

diff --cc arch/sh/kernel/cpu/sh4a/setup-sh7723.c
Simple merge

diff --cc arch/sh/kernel/cpu/sh4a/setup-sh7724.c
Simple merge