The iMX RT bootrom allows the user to load images into RAM regions from
flash by providing a correctly configured boot header. In particular, if
the boot header contains a load address within RAM, the bootroom will
automatically copy the image to the load address before executing it
Introduce CONFIG_NXP_IMX_RT_ROM_RAMLOADER to enable this feature. This
Kconfig will shift the LMA of a image built to run in a RAM region to
reside in the default FlexSPI boot region, which allows the image to be
loaded to the FlexSPI region using west. This is intended to simplify
development of applications executing from RAM on iMX RT based systems.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>