ARM: socfpga: enable PL330 DMA in socfpga_defconfig

Enable the PL330 DMA and DMATEST on SoCFPGA.

make savedefconfig says CONFIG_FHANDLE is not needed in the defconfig,
remove it.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
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v2: Also enable DMATEST as a kernel module