drivers: misc: Kconfig: Fix SPL_FS_LOADER prompt

Both FS_LOADER and SPL_FS_LOADER have the same menu prompt.
To avoid confusion, make prompt for SPL_FS_LOADER different.

Signed-off-by: Alexander Gendin <agendin@matrox.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 97057de..ed7eced 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -615,7 +615,7 @@
 	  ie. the FPGA device.
 
 config SPL_FS_LOADER
-	bool "Enable loader driver for file system"
+	bool "Enable loader driver for file system in SPL"
 	depends on SPL
 	help
 	  This is file system generic loader which can be used to load