PCI: mobiveil: Fix the CPU base address setup in inbound window

Current code erroneously sets-up the CPU base address through the
parameter 'pci_addr', which is passed to initialize the CPU (AXI) base
address of the inbound window where the controller maps the PCI address
space into CPU physical address space; furthermore, it also truncates it
by programming only the lower 32-bit value into the inbound CPU address
register.

Fix both issues by introducing a new parameter 'u64 cpu_addr' to
initialize both lower 32-bit and upper 32-bit of the CPU physical
base address mapping PCI inbound transactions into CPU (AXI) ones.

Fixes: 9af6bcb1 ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver")
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Reviewed-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>