ARM eukrea cpuimx25: Move flash_header to seperate file
...
The flash header is needed for pbl support, so move it to
separate file to be able to add it to pbl-y
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
