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>

arch/arm/Kconfig

@@ -555,11 +555,13 @@ config OMAP34XX
 	bool "OMAP34XX SoC"
 	select CPU_V7
 	select SUPPORT_SPL
+	select USE_TINY_PRINTF
 
 config OMAP44XX
 	bool "OMAP44XX SoC"
 	select CPU_V7
 	select SUPPORT_SPL
+	select USE_TINY_PRINTF
 
 config OMAP54XX
 	bool "OMAP54XX SoC"