DTS: OVERCLOCK TO 2.7 FOR ULTIMATE ZION KERNEL VERSION

Change-Id: I02ca115421642a0f5810ef6bc9c7784be14f328f
update defconfig

Change-Id: I57935976b8b222539ce9d001109fea26fdbe8684
increase hardlimit to 2.7ghz

Change-Id: I5e56257160b0667abe950596965a5629cdb6c734