init: clean up early_param_on_off() macro

Use early_param() to define early_param_on_off().

Link: https://lkml.kernel.org/r/20210201041532.4025025-1-masahiroy@kernel.org


Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Nick Desaulniers <ndesaulniers@gooogle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>