Revert "optimize 466 timings"

This reverts commit 44918770ac1aedcf85e50e604994f80580043cda.
Revert "ram timing optimize"

This reverts commit 08a90698a88b5fab5746ef22548f7a77909767bf.
Revert "OMAP4470 LPDDR interface configuration update for 466MHz"

This reverts commit 1fd06d3f161b0d224fb6673896fe3bc184bc30ed.
Revert "OMAP4470: Memory timings fix for LPDDR2 466 MHz"

This reverts commit f0b1b14ca374458aad8a4b9559c83da46fd8c5e7.
Revert "OMAP4: EMIF: Added timings for 466MHz elpida lpddr2 memory"

This reverts commit 08a8292d96e25dbe9e189e3504ecb25d144c3b86.