PCI: qcom: Use __be16 type to store return value from cpu_to_be16()

cpu_to_be16() returns __be16 value but the driver uses u16 and that's
incorrect. Fix it by using __be16 as the data type of bdf_be variable.

The issue was spotted by the below sparse warning:

sparse warnings: (new ones prefixed by >>)
>> drivers/pci/controller/dwc/pcie-qcom.c:1305:30: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned short [usertype] bdf_be @@     got restricted __be16 [usertype] @@
   drivers/pci/controller/dwc/pcie-qcom.c:1305:30: sparse:     expected unsigned short [usertype] bdf_be
   drivers/pci/controller/dwc/pcie-qcom.c:1305:30: sparse:     got restricted __be16 [usertype]

Link: https://lore.kernel.org/r/[email protected]
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Krzysztof Wilczyński <[email protected]>

Author: Mani-Sadhasivam

drivers/pci/controller/dwc/pcie-qcom.c

@@ -1343,7 +1343,7 @@ static int qcom_pcie_config_sid_sm8250(struct qcom_pcie *pcie)
 
 	/* Look for an available entry to hold the mapping */
 	for (i = 0; i < nr_map; i++) {
-		u16 bdf_be = cpu_to_be16(map[i].bdf);
+		__be16 bdf_be = cpu_to_be16(map[i].bdf);
 		u32 val;
 		u8 hash;