mb/google: Remove unused cpu device

The cpu device listed in MediaTek platforms' devicetree.cb doesn't
actually do anything, except causing an error during device
initialization:

 CPU: 00 missing read_resources

Therefore, remove it from the devicetree.

BUG=b:224419346
TEST=emerge-corsola coreboot
TEST=Krabby booted up successfully
BRANCH=none

Change-Id: Ibf9f7cf65da6a0dd0a0e1f556d5772573ba3e930
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62805
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/asurada/devicetree.cb

@@ -1,7 +1,5 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8192
-	device cpu_cluster 0 on
+	device cpu_cluster 0 on end
-		device cpu 0 on end
-	end
 end

src/mainboard/google/cherry/devicetree.cb

@@ -1,7 +1,5 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8195
-	device cpu_cluster 0 on
+	device cpu_cluster 0 on end
-		device cpu 0 on end
-	end
 end

src/mainboard/google/corsola/devicetree.cb

@@ -1,7 +1,5 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8186
-	device cpu_cluster 0 on
+	device cpu_cluster 0 on end
-		device cpu 0 on end
-	end
 end

src/mainboard/google/kukui/devicetree.cb

@@ -1,7 +1,5 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8183
-	device cpu_cluster 0 on
+	device cpu_cluster 0 on end
-		device cpu 0 on end
-	end
 end

src/mainboard/google/oak/devicetree.cb

@@ -1,7 +1,5 @@
 ## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8173
-	device cpu_cluster 0 on
+	device cpu_cluster 0 on end
-		device cpu 0 on end
-	end
 end