ALSA: echoaudio: Use standard C definitions of true and false

The echoaudio locally defines TRUE and FALSE.  Not only is this
redundant given that C now has a boolean type it results in lots of
warnings as other headers also define these macros, causing duplicate
definitions.  Fix this by removing the local defines and converting all
local users to use the standard C true and false instead, simply
removing the macros is less safe due to implicit inclusion of the other
definitons.

[fixed overlooked replacement of FALSE by tiwai]

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/echoaudio/layla20.c b/sound/pci/echoaudio/layla20.c
index 12e5d21..fc8468d 100644
--- a/sound/pci/echoaudio/layla20.c
+++ b/sound/pci/echoaudio/layla20.c
@@ -26,7 +26,7 @@
 #define ECHOCARD_HAS_SUPER_INTERLEAVE
 #define ECHOCARD_HAS_DIGITAL_IO
 #define ECHOCARD_HAS_EXTERNAL_CLOCK
-#define ECHOCARD_HAS_ADAT	FALSE
+#define ECHOCARD_HAS_ADAT	false
 #define ECHOCARD_HAS_OUTPUT_CLOCK_SWITCH
 #define ECHOCARD_HAS_MIDI