bring in 2.6.19.2 fixes, primarily for the fixed sata support.  see http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19.2 for full details of the changes

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6128 3c298f89-4303-0410-b956-a3cf2f4a3e73