cnss2: Config PCIe remap window for every register access

Config PCIe remap window for every register access which needs
PCIe window remap. Also change shadow register addresses to the
mappings within 4KB range so that no more PCIe window remap is
required for them.

Change-Id: Id4664ca9864f0b4ba79cc916d934d1409c9d4a11
Signed-off-by: Yue Ma <yuem@codeaurora.org>