ARM: LPC32xx: defconfig update

The change is a result of "make lpc32xx_defconfig; make savedefconfig"
run, a number of config options are removed:

  CONFIG_BINFMT_AOUT=y   -- not needed, legacy
  CONFIG_FPE_NWFPE=y     -- not needed, AEABI build
  CONFIG_IPV6_PRIVACY=y  -- removed build option
  CONFIG_IPV6=y          -- selected by default
  CONFIG_MII=y           -- not needed, board phys don't select library
  CONFIG_MTD_CHAR=y      -- removed build option
  CONFIG_MTD_M25P80=y    -- not needed, AT25 EEPROM driver is in use
  CONFIG_USB_PHY=y       -- selected by default

Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>