kernel: add kmod-mcp23s08 package

Package up the Microchip MCP23S08 I/O expander driver. Needed on the
CalAmp LMU5000 board.

Signed-off-by: Adam Porter <porter.adam@gmail.com>
[jogo@openwrt.org: fix subject]
Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36393 3c298f89-4303-0410-b956-a3cf2f4a3e73
libnl: update to 3.2.21

Signed-off-by: Russell Senior <russell@personaltelco.net>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36394 3c298f89-4303-0410-b956-a3cf2f4a3e73
ncurses: update to 5.9

Signed-off-by: Russell Senior <russell@personaltelco.net>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36395 3c298f89-4303-0410-b956-a3cf2f4a3e73
polarssl: update to 1.2.6

Signed-off-by: Russell Senior <russell@personaltelco.net>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36396 3c298f89-4303-0410-b956-a3cf2f4a3e73