PCI: Drop msix_table_offset_reg() and msix_pba_offset_reg() macros

msix_table_offset_reg() is used only once and adds a useless indirection,
so just use the table offset directly.

msix_pba_offset_reg() is unused, so just delete it.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index aaaf954..fb07e05 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -600,8 +600,8 @@
 	u32 table_offset;
 	u8 bir;
 
-	pci_read_config_dword(dev,
-		msix_table_offset_reg(dev->msix_cap), &table_offset);
+	pci_read_config_dword(dev, dev->msix_cap + PCI_MSIX_TABLE,
+			      &table_offset);
 	bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);
 	table_offset &= ~PCI_MSIX_FLAGS_BIRMASK;
 	phys_addr = pci_resource_start(dev, bir) + table_offset;