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Drop warnings in get_cpu_rev and changes the return value (a u32 instead of char * is returned) of the function to be coherent with other processors. Signed-off-by: Stefano Babic <sbabic@denx.de> CC: Detlev Zundel <dzu@denx.de> CC: Fabio Estevam <fabio.estevam@freescale.com>