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-socfpga/Kconfig b/arch/arm/mach-socfpga/Kconfig
index 1d91464..ee79953 100644
--- a/arch/arm/mach-socfpga/Kconfig
+++ b/arch/arm/mach-socfpga/Kconfig
@@ -45,7 +45,7 @@
 	select SPL_SYSCON if SPL
 	select ETH_DESIGNWARE_SOCFPGA
 	imply FPGA_SOCFPGA
-	imply USE_TINY_PRINTF
+	imply SPL_USE_TINY_PRINTF
 
 config TARGET_SOCFPGA_CYCLONE5
 	bool
@@ -59,7 +59,7 @@
 	imply SPL_SIZE_LIMIT_SUBTRACT_MALLOC
 	imply SPL_STACK_R
 	imply SPL_SYS_MALLOC_SIMPLE
-	imply USE_TINY_PRINTF
+	imply SPL_USE_TINY_PRINTF
 
 config TARGET_SOCFPGA_STRATIX10
 	bool