UCM config: Don't apply speaker_eq to headphones on Cave

Checked all ucm configs under
src/overlays/
src/private-overlays/
src/third_party/adhd/ucm-config/

Asuka Cave Kevin are the only three boards that apply speaker eq/drc
to headphones due to missing OutputDspName in SectionDevice."Headphone".

BUG=chrome-os-partner:55365
TEST=Verify the speaker_eq is not applied to headphones on Cave

Original-Change-Id: Icc5dd7d784eaee39a5431f1df82eb2423fd36e2c
Signed-off-by: Ben Zhang <benzh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/366482
Reviewed-by: Dylan Reid <dgreid@chromium.org>
(cherry picked from commit 9e99d26d7a6e56f487615fc2e55d16b4fc98ea15)
Conflicts: only cherry-picked change for Cave, fixed ebuild revisions

Change-Id: Icdf1e5e01c9074af9e33829d05311dac8941e1ac
Signed-off-by: Ben Zhang <benzh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/374798
diff --git a/overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r11.ebuild b/overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r12.ebuild
similarity index 100%
rename from overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r11.ebuild
rename to overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r12.ebuild
diff --git a/overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r5.ebuild b/overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r5.ebuild
deleted file mode 120000
index 29dfcfd..0000000
--- a/overlay-cave/chromeos-base/chromeos-bsp-cave/chromeos-bsp-cave-0.0.1-r5.ebuild
+++ /dev/null
@@ -1 +0,0 @@
-chromeos-bsp-cave-0.0.1.ebuild
\ No newline at end of file
diff --git a/overlay-cave/chromeos-base/chromeos-bsp-cave/files/audio-config/ucm-config/sklnau8825max/HiFi.conf b/overlay-cave/chromeos-base/chromeos-bsp-cave/files/audio-config/ucm-config/sklnau8825max/HiFi.conf
index aca1dda..56f6fa8 100644
--- a/overlay-cave/chromeos-base/chromeos-bsp-cave/files/audio-config/ucm-config/sklnau8825max/HiFi.conf
+++ b/overlay-cave/chromeos-base/chromeos-bsp-cave/files/audio-config/ucm-config/sklnau8825max/HiFi.conf
@@ -37,6 +37,7 @@
 SectionDevice."Headphone".0 {
 	Value {
 		JackName "sklnau8825max Headset Jack"
+		OutputDspName ""
 	}
 
 	EnableSequence [