package/imx-seco: use the c0 revision for the imx8qxp ahab image

package/imx-seco: use the c0 revision for the imx8qxp ahab image

Update the selection of the ahab container image to use based upon
a choice in the Config.in - there are multiple ASIC revisions that
use AHAB and the firmware images need to match. This extends the
support beyond a default image for just the imx8 amd imx8x based
upon the current contents of the imx-seco firmware extraction.

Files from 3.7.4:
    mx8dxla0-ahab-container.img
    mx8dxla1-ahab-container.img
    mx8qmb0-ahab-container.img
    mx8qxb0-ahab-container.img
    mx8qxc0-ahab-container.img

The original defaults prior to this patch were mx8qmb0 for IMX8
and mx8qxb0 for the IMX8X selections. However, this patch will
change the default selection of the IMX8X from the B0 option to
C0 because the IMX8X C0 HW variant is widespread and the current
release of hardware silicon. Because there are still B0's in
circulation an option is being kept for that as well.

Signed-off-by: Charles Hardin <ckhardin@gmail.com>
[yann.morin.1998@free.fr: 1 minor code style]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>