ARM: omap: Enable tiny printf on omap3_logic

ARM: omap: Enable tiny printf on omap3_logic

Enable support for tiny printf on the omap3_logic board to trim down
the SPL size. This makes the SPL actually build again and fit into
the SRAM.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Tom Rini <[email protected]>
Cc: [email protected]
Reviewed-by: Tom Rini <[email protected]>