bcwc_pcie: Missed AND'ing S2_2BA0 reg write

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
bcwc_pcie: Finish s2_init_ddr_controller_soc()

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>