lspci: Decode AER Multiple Header and TLP Prefix Log bits

lspci: Decode AER Multiple Header and TLP Prefix Log bits

Decode the AER Multiple Header Recording and TLP Prefix Log Present bits in
the AER Capabilities and Control register.

The difference in the "lspci -vv" output looks like this:

-       AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
+       AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
+               MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>