PCI: mobiveil: Fix csr_read()/write() build issue

PCI: mobiveil: Fix csr_read()/write() build issue

RISCV has csr_read()/write() macros in arch/riscv/include/asm/csr.h.

The same function naming is used in the PCI mobiveil driver thus
causing build error.

Rename csr_[read,write][l,] to mobiveil_csr_read()/write() to fix it.

drivers/pci/controller/pcie-mobiveil.c:238:69: error: macro "csr_read" passed 3 arguments, but takes just 1
 static u32 csr_read(struct mobiveil_pcie *pcie, u32 off, size_t size)

drivers/pci/controller/pcie-mobiveil.c:253:80: error: macro "csr_write" passed 4 arguments, but takes just 2
 static void csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off, size_t size)

Fixes: bcbe0d9a8d93 ("PCI: mobiveil: Unify register accessors")
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Minghuan Lian <Minghuan.Lian@nxp.com>
Cc: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Cc: Andrew Murray <andrew.murray@arm.com>