Kconfig: Use spaces not tabs in Kconfig entires

While the Kconfig language seems to accept either form of whitespace, we
use a space throughout the project, except in these spots.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/mx6memcal/Kconfig b/board/freescale/mx6memcal/Kconfig
index 9987cba..481403a 100644
--- a/board/freescale/mx6memcal/Kconfig
+++ b/board/freescale/mx6memcal/Kconfig
@@ -87,12 +87,12 @@
 	help
 	  Select the type of DDR (DDR3 or LPDDR2) used on your design
 
-config	DDR3
+config DDR3
 	bool "DDR3"
 	help
 	  Select this if your board design uses DDR3.
 
-config	LPDDR2
+config LPDDR2
 	bool "LPDDR2"
 	help
 	  Select this if your board design uses LPDDR2.