ARM64: zynqmp: Fix ddr init for zcu100

ARM64: zynqmp: Fix ddr init for zcu100

Use prog_reg_ddr() instead of prog_reg() which has different
shift and mask parameters position. It is caused somewhere between
DDR team and PCW.
Also forbit prog_reg_ddr() inlining which saves 276B.

Also remove variables wdqsl_b2, wdqsl_b3, lcdl_b2, lcdl_b3, calc12, calc13
which were generated in DDR init snipset but they were completely unused
which generated compilation warnings.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>