Add gpio-line-names for the various GPIO's used on Gateworks Venice
boards. Note that these GPIO's are typically 'configured' in Boot
Firmware via gpio-hog therefore we only configure line names to keep the
boot firmware configuration from changing on kernel init.
Signed-off-by: NTim Harvey <tharvey@gateworks.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>