Disable linux.mod on qemu-mips since it's not functional and leads
	to compilation failure.

	* conf/mips.rmk (pkglib_MODULES): Remove linux.mod.
	* conf/mips-yeeloong.rmk (pkglib_MODULES): Add linux.mod.
	* conf/mips.rmk (linux_mod_SOURCES): Move from here ...
	* conf/mips-yeeloong.rmk (linux_mod_SOURCES): ... here
	* conf/mips.rmk (linux_mod_CFLAGS): Move from here ...
	* conf/mips-yeeloong.rmk (linux_mod_CFLAGS): ... here
	* conf/mips.rmk (linux_mod_ASFLAGS): Move from here ...
	* conf/mips-yeeloong.rmk (linux_mod_ASFLAGS): ... here
	* conf/mips.rmk (linux_mod_LDFLAGS): Move from here ...
	* conf/mips-yeeloong.rmk (linux_mod_LDFLAGS): ... here
	Reported by: BVK Chaitanya