Pick up new linux-fslc 5.4 kernel by updating to latest zeus revision
of meta-freescale. This greatly improves i.MX6 etnaviv performance
over the previous 5.1 kernel.
Bug-AGL: SPEC-2932
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I8fe81b150a2075df8b83f04b6a12a85a4472192f