Support for i2cResetMasters for all existing I2C Masters

This change supports resetting any I2C Master of a processor or
memory buffer that has a device off of one of its engines.

Change-Id: I2849d3c3d1901489310547ad06ba568aaab32a60
RTC: 115834
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/14967
Tested-by: Jenkins Server
Reviewed-by: WILLIAM G. HOFFA <wghoffa@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Andrew J. Geissler <andrewg@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>