board-mx6_s: clean up tsc2007 stuff
board-mx6_s: Add GPIO pins, CSPI2
board-mx6_s: add CSPI2

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
board-mx6_s: cleanup

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
board-mx6_s: add GPIOs

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
s_defconfig: add userspace SPI device support

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
board-mx6_s: export GPIOs, remove buttons

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>