wpa-supplicant: fix for rebuild

wpa-supplicant: fix for rebuild

Fixed when rebuild:
make: *** No rule to make target `/path/to/old//sysroots/qemux86-64/usr/lib/dbus-1.0/include/dbus/dbus-arch-deps.h', needed by `dbus/dbus_old.o'.  Stop.

The .d files save the path of the dependencies files which may not exist
when rebuild, we can remove them to make the rebuild work.

(From OE-Core rev: e336102e59dbbd01fe67121738203563476f9456)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>