Revert "clk: ti: omap44xx: use assigned-clocks for boot clock setup"

This reverts commit 56b0bea005e5c771333307117e5952178872369e.
ARM: dts: omap4: setup assigned clocks from cm1 node

Signed-off-by: Tero Kristo <t-kristo@ti.com>
SQUASH: fix PRCM driver probe

Was failing with duplicate calls with prm/scrm.

Signed-off-by: Tero Kristo <t-kristo@ti.com>