Use separate options for TPL support

At present TPL uses the same options as SPL support. In a few cases the board
config enables or disables the SPL options depending on whether
CONFIG_TPL_BUILD is defined.

With the move to Kconfig, options are determined for the whole build and
(without a hack like an #undef in a header file) cannot be controlled in this
way.

Create new TPL options for these and update users. This will allow Kconfig
conversion to proceed for these boards.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/Makefile b/lib/Makefile
index f6a8ba1..c81bfeb 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -78,11 +78,16 @@
 obj-$(CONFIG_LIB_RAND) += rand.o
 
 ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_TPL_BUILD
+SERIAL_SUPPORT := $(CONFIG_TPL_SERIAL_SUPPORT)
+else
+SERIAL_SUPPORT := $(CONFIG_SPL_SERIAL_SUPPORT)
+endif
 # SPL U-Boot may use full-printf, tiny-printf or none at all
 ifdef CONFIG_USE_TINY_PRINTF
-obj-$(CONFIG_SPL_SERIAL_SUPPORT) += tiny-printf.o panic.o strto.o
+obj-$(SERIAL_SUPPORT) += tiny-printf.o panic.o strto.o
 else
-obj-$(CONFIG_SPL_SERIAL_SUPPORT) += vsprintf.o panic.o strto.o strmhz.o
+obj-$(SERIAL_SUPPORT) += vsprintf.o panic.o strto.o strmhz.o
 endif
 else
 # Main U-Boot always uses the full printf support