This commit adds "select CPU_V7" for some new boards that were not
covered by commit 2e07c249a67e
(kconfig: arm: introduce symbol for ARM CPUs).
Redundant "SYS_CPU" defines and "string" directives should be removed.
Signed-off-by: Masahiro Yamada
Acked-by: Stefan Roese
Acked-by: Georges Savoundararadj