depmodwrapper: Use nonarch_base_libdir for depmod.d

depmodwrapper: Use nonarch_base_libdir for depmod.d

This ensure that when depmod-native runs we can find the correct
exclude.conf information, in this case adding .debug to ignore
the .debug kernell modules. The kmod utilities like depmod can use
either /etc/depmod.d or /lib/depmod.d. The kmod recipe is installing
the existing search.conf to /lib/depmod.d (nonarch_base_lib)

When the busybox modutils are used, /lib/depmod.d is not used, so
it's safe add the exclude.conf file to /lib/depmod.d.

Signed-off-by: Saul Wold <saul.wold@windriver.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>