Added DDR4 IP to OpenCL BSP

...ons/ta2/libraries/ta2_unb2b_bsp/hardware/unb2b/board.qsys

...ta2/libraries/ta2_unb2b_bsp/hardware/unb2b/board_spec.xml

...ibraries/ta2_unb2b_bsp/hardware/unb2b/ctrl_unb2_board.tcl

...ions/ta2/libraries/ta2_unb2b_bsp/hardware/unb2b/ddr4.qsys

...tions/ta2/libraries/ta2_unb2b_bsp/hardware/unb2b/flat.qsf

...ons/ta2/libraries/ta2_unb2b_bsp/hardware/unb2b/hdllib.cfg

.../ta2_unb2b_bsp/hardware/unb2b/ip/board/board_avs_eth_0.ip

...ries/ta2_unb2b_bsp/hardware/unb2b/ip/board/board_clk_0.ip

...ries/ta2_unb2b_bsp/hardware/unb2b/ip/board/board_cpu_0.ip

...a2_unb2b_bsp/hardware/unb2b/ip/board/board_jtag_uart_0.ip

...a2_unb2b_bsp/hardware/unb2b/ip/board/board_kclk_global.ip

...ta2_unb2b_bsp/hardware/unb2b/ip/board/board_kernel_clk.ip

...unb2b_bsp/hardware/unb2b/ip/board/board_kernel_clk_gen.ip

..._bsp/hardware/unb2b/ip/board/board_kernel_ddr4a_bridge.ip

...b2b_bsp/hardware/unb2b/ip/board/board_kernel_interface.ip

..._unb2b_bsp/hardware/unb2b/ip/board/board_onchip_memory.ip

...b2b_bsp/hardware/unb2b/ip/board/board_onchip_memory2_0.ip

...es/ta2_unb2b_bsp/hardware/unb2b/ip/board/board_pio_pps.ip

...nb2b_bsp/hardware/unb2b/ip/board/board_pio_system_info.ip

...es/ta2_unb2b_bsp/hardware/unb2b/ip/board/board_pio_wdi.ip