(SHIFT) techpack: audio: silence build warnings for now

Change-Id: I90aae92c59b5fd9a3ce23560a4d8474472a7c2d0
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
diff --git a/techpack/audio/Makefile b/techpack/audio/Makefile
index 0579887..9241ff4 100644
--- a/techpack/audio/Makefile
+++ b/techpack/audio/Makefile
@@ -12,3 +12,9 @@
 obj-y += dsp/
 obj-y += ipc/
 obj-y += soc/
+
+# TODO: remove me asap
+subdir-ccflags-y += \
+	-Wno-enum-conversion \
+	-Wno-non-literal-null-conversion \
+	-Wno-self-assign \