uboot-imx

omap3, omap4: Enable USE_TINY_PRINTF for all

In the case of omap3 we have a number of platforms that are close to
exceeding SRAM limits, depending on compiler.  Move to USE_TINY_PRINTF
to give them more room.  OMAP4 will soon enough be in a similar place,
so enable that now.

Signed-off-by: Tom Rini <trini@konsulko.com>