In case of error while executing esbc_validate command, SNVS
transition and issue of reset is required only for secure-boot.
If boot mode is non-secure, this is not required.

Similarly, esbc_halt command which puts the core in Spin Loop
is applicable only for Secure Boot.
Signed-off-by: NAneesh Bansal <aneesh.bansal@nxp.com>
Acked-by: NRuchika Gupta <ruchika.gupta@nxp.com>
Reviewed-by: NYork Sun <york.sun@nxp.com>