Fix Kconfig style

Remove TABs from Kconfig files
Add comments
diff --git a/graphics/nxwm/Kconfig b/graphics/nxwm/Kconfig
index 9f9e044..8a2b904 100644
--- a/graphics/nxwm/Kconfig
+++ b/graphics/nxwm/Kconfig
@@ -922,7 +922,7 @@
 
 if NXWM_MEDIAPLAYER_CUSTOM_COLORS
 
-	config NXWM_MEDIAPLAYER_VOLUMECOLOR
+config NXWM_MEDIAPLAYER_VOLUMECOLOR
 	hex "Media Volume Slide Color"
 	default 0x0
 
diff --git a/testing/nxffs/Kconfig b/testing/nxffs/Kconfig
index bc1c6b2..759b774 100644
--- a/testing/nxffs/Kconfig
+++ b/testing/nxffs/Kconfig
@@ -42,7 +42,7 @@
 	---help---
 		Determines the maximum size of names used in the filesystem
 
-	config TESTING_NXFFS_MAXFILE
+config TESTING_NXFFS_MAXFILE
 	int "Max file size"
 	default 8192
 	---help---
@@ -68,4 +68,4 @@
 	bool "Verbose output"
 	default n
 
-endif
+endif # TESTING_NXFFS