pci: Reduce scope of error injection

No one outside of pcie_aer.h was using error injection; mark them
static for internal use.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20170427215821.19397-3-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

hw/pci/pcie_aer.c

@@ -376,7 +376,7 @@ static void pcie_aer_msg_root_port(PCIDevice *dev, const PCIEAERMsg *msg)
  *
  * Walk up the bus tree from the device, propagate the error message.
  */
-void pcie_aer_msg(PCIDevice *dev, const PCIEAERMsg *msg)
+static void pcie_aer_msg(PCIDevice *dev, const PCIEAERMsg *msg)
 {
     uint8_t type;
 
@@ -631,7 +631,7 @@ static bool pcie_aer_inject_uncor_error(PCIEAERInject *inj, bool is_fatal)
  * Figure 6-2: Flowchart Showing Sequence of Device Error Signaling and Logging
  *             Operations
  */
-int pcie_aer_inject_error(PCIDevice *dev, const PCIEAERErr *err)
+static int pcie_aer_inject_error(PCIDevice *dev, const PCIEAERErr *err)
 {
     uint8_t *aer_cap = NULL;
     uint16_t devctl = 0;

include/hw/pci/pcie_aer.h

@@ -100,8 +100,4 @@ void pcie_aer_root_write_config(PCIDevice *dev,
                                 uint32_t addr, uint32_t val, int len,
                                 uint32_t root_cmd_prev);
 
-/* error injection */
-int pcie_aer_inject_error(PCIDevice *dev, const PCIEAERErr *err);
-void pcie_aer_msg(PCIDevice *dev, const PCIEAERMsg *msg);
-
 #endif /* QEMU_PCIE_AER_H */