1. 1a03a7e powerpc: Remove __ilog2_u64 and ffs4 from bitops by Fabio Estevam · Thu Nov 05 12:43:40 2015 -0200
  2. e12ce98 powerpc/mpc83xx: Migrate from spd_sdram to unified DDR driver by York Sun · Fri Aug 26 11:32:44 2011 -0700