libdfp: Add missing ChangeLog
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog for commit
eab6a953b9a5520005c50838519e4872820a3048.

gftg85/libdfp,gftg85/libdfp,gftg85/libdfp,pmur/libdfp,pmur/libdfp,pmur/libdfp,pmur/libdfp,gftg85/libdfp