global: Migrate CONFIG_BOARDDIR to CFG

Perform a simple rename of CONFIG_BOARDDIR to CFG_BOARDDIR

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/sh/cpu/u-boot.lds b/arch/sh/cpu/u-boot.lds
index d360eea..c31deec 100644
--- a/arch/sh/cpu/u-boot.lds
+++ b/arch/sh/cpu/u-boot.lds
@@ -35,7 +35,7 @@
 	.text :
 	{
 		KEEP(*/start.o		(.text))
-		KEEP(CONFIG_BOARDDIR/lowlevel_init.o	(.text .spiboot1.text))
+		KEEP(CFG_BOARDDIR/lowlevel_init.o	(.text .spiboot1.text))
 		KEEP(*(.spiboot2.text))
 		. = ALIGN(8192);
 #ifdef CONFIG_ENV_IS_IN_FLASH