EDAC, mce_amd_inj: Convert mce_amd_inj module to debugfs

This module's interface belongs in debugfs, not in sysfs.

Signed-off-by: Borislav Petkov <bp@suse.de>

drivers/edac/Kconfig

@@ -61,14 +61,14 @@ config EDAC_DECODE_MCE
 	  has been initialized.
 
 config EDAC_MCE_INJ
-	tristate "Simple MCE injection interface over /sysfs"
-	depends on EDAC_DECODE_MCE
+	tristate "Simple MCE injection interface"
+	depends on EDAC_DECODE_MCE && DEBUG_FS
 	default n
 	help
-	  This is a simple interface to inject MCEs over /sysfs and test
-	  the MCE decoding code in EDAC.
+	  This is a simple debugfs interface to inject MCEs and test different
+	  aspects of the MCE handling code.
 
-	  This is currently AMD-only.
+	  WARNING: Do not even assume this interface is staying stable!
 
 config EDAC_MM_EDAC
 	tristate "Main Memory EDAC (Error Detection And Correction) reporting"