ShellPkg: update pci enumeration routine for platforms with multiple pci segments.
ShellPkg: update pci enumeration routine for platforms with multiple pci segments.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eugene Cohen eugene@hp.com
reviewed-by: jaben carsey <jaben.carsey@intel.com>

git-svn-id: 5648d1bec6962b0a6d1d1b40eba8cf5cdb62da3d@13524 6f19259b-4bc3-4df7-8a09-765794883524

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2