[meta-freescale] imx-kobs 5.4 recipe update for jethro

[Palacios, Hector]

Hello,

Current version 5.3 of imx-kobs in Jethro does not write correctly FCB blocks for the i.MX6UL, preventing it from booting from the NAND.
Version 5.4 in 'meta-fsl-bsp-release' on the other hand works fine.

Could we have this recipe updated to 5.4 for Jethro, as it has been updated in the past?

Thank you.
--
Héctor Palacios