spl: Allow tiny printf() to be controlled in SPL and TPL

At present there is only one control for this and it is used for both SPL
and TPL. But SPL might have a lot more space than TPL so the extra cost of
a full printf() might be acceptable.

Split the option into two, providing separate SPL and TPL controls. The
TPL setting defaults to the same as SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index ed8056e..4c87cbc 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -11,7 +11,7 @@
 	select ARM_ERRATA_454179
 	select ARM_ERRATA_621766
 	select ARM_ERRATA_725233
-	select USE_TINY_PRINTF if SPL
+	select SPL_USE_TINY_PRINTF if SPL
 	imply NAND_OMAP_GPMC
 	imply SPL_FS_EXT4
 	imply SPL_FS_FAT
@@ -31,7 +31,7 @@
 
 config OMAP44XX
 	bool "OMAP44XX SoC"
-	select USE_TINY_PRINTF
+	select SPL_USE_TINY_PRINTF
 	imply NAND_OMAP_ELM
 	imply NAND_OMAP_GPMC
 	imply SPL_DISPLAY_PRINT
@@ -124,7 +124,7 @@
 	imply SPL_NAND_SUPPORT
 	imply SYS_I2C_OMAP24XX
 	imply SYS_THUMB_BUILD
-	imply USE_TINY_PRINTF
+	imply SPL_USE_TINY_PRINTF
 	help
 	  Support for AM335x SOC from Texas Instruments.
 	  The AM335x high performance SOC features a Cortex-A8