MdeModulePkg/Xhci: Coding style update to follow EDKII C Coding Standards Spec.
MdeModulePkg/Xhci: Coding style update to follow EDKII C Coding Standards Spec.

Signed-off-by: Feng Tian <feng.tian@intel.com>

git-svn-id: 3158a46dfd52e07d1fda3e32e1ab2e353a00b20f@14933 6f19259b-4bc3-4df7-8a09-765794883524

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