xtensa: Add config files for Diamond 232L - Rev B processor variant

The Diamond 232L processor is a pre-configured Xtensa processor tailored
for Linux application.

Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 02e417d..2369ec6 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -63,7 +63,12 @@
 	default XTENSA_VARIANT_FSF
 
 config XTENSA_VARIANT_FSF
-	bool "fsf"
+	bool "fsf - default (not generic) configuration"
+
+config XTENSA_VARIANT_DC232B
+	bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
+	help
+	This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
 endchoice
 
 config MMU