[U-Boot] [PATCH RESEND] imx-common: hab: fix return value from hab_auth_img

[Eric Nelson]

Hi all,

On 11/27/2016 08:27 AM, Eric Nelson wrote:
> The authenticate_image routine returns a boolean to indicate
> a valid (1) or invalid (0) image.
> 

An off-list discussion highlighted that the expected return value
from the authenticate_image() routine isn't obvious since there
isn't any user in main-line except the "hab_auth_img" command.

My understanding was gleaned from this use in the NXP tree:

http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/tree/drivers/usb/gadget/f_fastboot.c?id=m6.0.1_2.1.0-ga#n1727