sundance: PCI ID for ip100a

Patch provided by Pedro Alejandro López-Valencia in
http://bugzilla.kernel.org/show_bug.cgi?id=6691

The patch is derived from IC+ GPL'ed rework of sundance driver
available at http://www.icplus.com.tw/pp-IP100A.html

Patch closes http://bugzilla.kernel.org/show_bug.cgi?id=5858

 as well.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Pedro Alejandro López-Valencia <palopezv@gmail.com>