Revert "Revert "Revert "Revert "Revert some serial settings""""

This reverts commit 36dbfee2559ae04e42f743352d0ba6cd6e244471.
Revert "Revert "Revert "Revert "[3.0.31 WIP] Continue with some serial stuff""""

This reverts commit d3b6ae6e0adbcdbde784034bf717110e66ce4308.
Revert "Revert "Revert "Revert "OMAP: Serial: Fix err""""

This reverts commit 49e2ffdf78ebe55a2a36d299140638477aefeb45.
OMAP4: PM: syscontrol: workaround LPDDR CK IO pull disable

    CK differential IO PADn, PADp values can be same because of a hardware bug in
    EMIF CMD phy. To work around this bug, it is necessary to disable the
    pulls. Though this bug has no functional impact, in OSWR, 500uA saving is
    expected with the workaround for these IOs.

    CDDS no: OMAP4460-1.0BUG00291 (OMAP official errata ID yet to be available).