wic: Set a fixed size for boot partition in wic image
wic: Set a fixed size for boot partition in wic image

The beagleboneai is not loading the MLO without this change.

A similar change was needed in meta-yocto-bsp for the beaglebone black
due to the updating of dosfstools to 4.2 in Hardknott.

[Yocto #14306]

(See also meta-yocto rev: 0c679ac53b52e631a7c961872ce58f5cf74b8629)

Signed-off-by: Theodore A. Roth <2199f167375789b034bd2c684a0784a555b949b7@openavr.org>
Reviewed-by: Denys Dmytriyenko <d29de71aea38aad3a87d486929cb0aad173ae612@konsulko.com>
Signed-off-by: Yogesh Siraswar <e4c3dc570d04bd480366ad8aa87a4b23b1e4ce6e@ti.com>

rcn-ee/meta-ti,rcn-ee/meta-ti,rcn-ee/meta-ti,rcn-ee/meta-ti