[ppc40x]: increase kernel partition size to fix boot issues

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36982 3c298f89-4303-0410-b956-a3cf2f4a3e73
ath9k_htc: fix idle mode handling

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36983 3c298f89-4303-0410-b956-a3cf2f4a3e73