clk: rename CONFIG_SPL_CLK_SUPPORT to CONFIG_SPL_CLK

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 07eb54c..890f22f 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -8,7 +8,7 @@
 	  feed into other clocks in a tree structure, with multiplexers to
 	  choose the source for each clock.
 
-config SPL_CLK_SUPPORT
+config SPL_CLK
 	bool "Enable clock support in SPL"
 	depends on CLK
 	help