imx7dsabresd: Fix the boot of a NXP kernel
Booting a NXP kernel with mainline U-boot leads to the following
kernel crash:
,----
| caam: probe of
30900000.caam failed with error -11
| Unable to handle kernel NULL pointer dereference at virtual address
00000004
| pgd =
80004000
| [
00000004] *pgd=
00000000
| Internal error: Oops: 805 [#1] PREEMPT SMP ARM
`----
This happens because NXP kernel expects MX7 to boot in secure mode,
so introduce mx7dsabresd_secure_defconfig that selects CONFIG_MX7_SEC
and allows booting a NXP provided kernel successfully.
Change-Id: Ic05912c1328c75e8e25c89e7543b67c8c214e20d
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>