CONFIG_SYS_INIT_RAM_SIZE may be used out of the board header file.
Some boards use CONFIG_SYS_INIT_RAM_END for the same purpose. To
unify the macros, use CONFIG_SYS_INIT_RAM_SIZE for all.
Signed-off-by: NYork Sun <york.sun@nxp.com>
CC: Mario Six <mario.six@gdsys.cc>
Acked-by: NStefan Roese <sr@denx.de>
Acked-by: NAnatolij Gustschin <agust@denx.de>