OMAP2xxx clock: drop DELAYED_APP flag from non-clksel clocks

The DELAYED_APP flag is effective only with clksel clocks, so drop it from
clocks that are not rate-changeable or that use non-clksel rate changing code
(e.g., virt_prcm_set).

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>