lspci: Decode all defined fields in the Device Capabilities 2 register

lspci: Decode all defined fields in the Device Capabilities 2 register

Decode all defined fields in the Device Capabilities 2 register.

The difference from "lspci -vv" output now looks like this:

-               DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF Not Supported ARIFwd+
+               DevCap2: Completion Timeout: Range ABC, TimeoutDis+, NROPrPrP-, LTR+
+                        10BitTagComp-, 10BitTagReq-, OBFF Not Supported, ExtFmt-, EETLPPrefix-
+                        EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
+                        FRS-, LN System CLS Not Supported, TPHComp-, ExtTPHComp-, ARIFwd+

Signed-off-by: Frederick Lawler <fred@fredlawl.com>