kernel: do not build FW_LOADER as a module.

CONFIG_FW_LOADER=y is set in the generic config and our packages in 
packages/kernel/linux are depending on it to be compiled into the 
kernel. 
This fixes some dependency problem where kmod-r8169 misses 
firmware_class.ko.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37672 3c298f89-4303-0410-b956-a3cf2f4a3e73