ventana: change machine description to encompass all IMX6

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
ventana: make sure uart2_en is setup correctly

Add uart2_en pinmux for GW54xx
Add uart2_en export and pinmux for GW52xx

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
ventana: fix model detection for new GW54xx variants

Several new GW54xx models have been released and need to be treated the same.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
ventana: fix enabling of crypto support

If 'caam' passed on the kernel cmdline crypto suport will be enabled.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>