powerpc/t4240qds: Add board detail for bdinfo command

Print more detail information including core voltage, RCW source, switch
settings, etc. with bdinfo command.

Signed-off-by: York Sun <yorksun@freescale.com>
CC: Wolfgang Denk <wd@denx.de>
CC: Tom Rini <trini@ti.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
1 file changed