Blackfin: first pass at debug mmr support

Signed-off-by: NMike Frysinger <vapier@gentoo.org>

arch/blackfin/Kconfig.debug

@@ -32,7 +32,7 @@ config DEBUG_VERBOSE
 	  Most people should say N here.
 
 config DEBUG_MMRS
-	bool "Generate Blackfin MMR tree"
+	tristate "Generate Blackfin MMR tree"
 	select DEBUG_FS
 	help
 	  Create a tree of Blackfin MMRs via the debugfs tree.  If

arch/blackfin/kernel/Makefile

@@ -37,3 +37,5 @@ obj-$(CONFIG_BFIN_PSEUDODBG_INSNS)   += pseudodbg.o
 # the kgdb test puts code into L2 and without linker
 # relaxation, we need to force long calls to/from it
 CFLAGS_kgdb_test.o := -mlong-calls -O0
+
+obj-$(CONFIG_DEBUG_MMRS)             += debug-mmrs.o