Replace deprecated strcpy/strcat calls with strscpy/strlcat for
bounds-checked string operations in swconfig_leds, clk-rtl83xx,
and UML pseudo-random MAC patch.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/24132
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>