ccimx8m: remove quad core device tree overlay

This overlay added cooling devices for all quad cores.
On the latest BSP, the SoC device tree include contains all four
cooling devices and the newest U-Boot is able to delete the nodes
for non-existing cores, so there's no need for this overlay
anymore.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

meta-digi-arm/conf/machine/ccimx8mm-dvk.conf

@@ -25,7 +25,6 @@ KERNEL_DEVICETREE ?= " \
     digi/_ov_board_user-leds_ccimx8m-dvk.dtbo \
     digi/_ov_som_bt_ccimx8m.dtbo \
     digi/_ov_som_mca-keypad_ccimx8m.dtbo \
-    digi/_ov_som_quad_ccimx8m.dtbo \
     digi/_ov_som_wifi_ccimx8m.dtbo \
 "
 

meta-digi-arm/conf/machine/ccimx8mn-dvk.conf

@@ -26,7 +26,6 @@ KERNEL_DEVICETREE ?= " \
     digi/_ov_board_v1-v2_ccimx8mn-dvk.dtbo \
     digi/_ov_som_bt_ccimx8m.dtbo \
     digi/_ov_som_mca-keypad_ccimx8m.dtbo \
-    digi/_ov_som_quad_ccimx8m.dtbo \
     digi/_ov_som_v1_ccimx8mn.dtbo \
     digi/_ov_som_wifi_ccimx8m.dtbo \
 "

meta-digi-arm/recipes-bsp/u-boot/u-boot-dey/ccimx8mm-dvk/boot.txt

@@ -33,11 +33,6 @@ if test -n "${module_ram}"; then
 	fi
 fi
 
-# Apply quad overlay if the SOC type is "imx8mm"
-if test "${soc_type}" = "imx8mm"; then
-	setenv overlays _ov_som_quad_ccimx8m.dtbo,${overlays}
-fi
-
 # Get the UUID of the configured boot partition.
 part uuid mmc ${mmcbootdev}:${mmcpart} bootpart
 # Check the boot source.

meta-digi-arm/recipes-bsp/u-boot/u-boot-dey/ccimx8mn-dvk/boot.txt

@@ -37,11 +37,6 @@ if test -n "${module_ram}"; then
 	fi
 fi
 
-# Apply quad overlay if the SOC type is "imx8mn"
-if test "${soc_type}" = "imx8mn"; then
-	setenv overlays _ov_som_quad_ccimx8m.dtbo,${overlays}
-fi
-
 # Apply DVK v1-v2 overlay if the board version is < 3
 if test "${board_version}" -lt "3"; then
 	setenv overlays _ov_board_v1-v2_ccimx8mn-dvk.dtbo,${overlays}