Merge branch 'master' of git://git.denx.de/u-boot-arm

arm: debug: replace license blocks with SPDX

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

arm: debug: import debug files from Linux 3.16

U-Boot does not have arch/arm/kernel, include/uapi directories,
This commit copies files as follows:

Location in Linux -> Location in

arm: debug: import debug files from Linux 3.16

U-Boot does not have arch/arm/kernel, include/uapi directories,
This commit copies files as follows:

Location in Linux -> Location in U-Boot

arch/arm/kernel/debug.S -> arch/arm/lib/debug.S
arch/arm/include/debug/8250.S -> arch/arm/include/debug/8250.S
include/uapi/linux/serial_reg.h -> include/linux/serial_reg.h

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

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