mvebu: use SOC to derive DEVICE_DTS

This introduces the SOC variable to mvebu target to derive some of
the DEVICE_DTS variables based on the SOC prefix and the device
definition name.

Since DTS names and compatible are inconsistent also in the kernel
for this target, the scheme cannot be applied to all devices, though.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Tomasz Maciej Nowak <tomek_n@o2.pl>

target/linux/mvebu/image/Makefile

@@ -77,6 +77,7 @@ endef
 
 define Device/Default
   PROFILES := Default
+  DEVICE_DTS = $$(SOC)-$(lastword $(subst _, ,$(1)))
   BOARD_NAME = $$(DEVICE_DTS)
   KERNEL_NAME := zImage
   KERNEL := kernel-bin | append-dtb | uImage none

target/linux/mvebu/image/cortex-a53.mk

@@ -6,7 +6,7 @@ define Device/globalscale_espressobin
   DEVICE_ALT0_VENDOR := Marvell
   DEVICE_ALT0_MODEL := Armada 3700 Community Board
   DEVICE_ALT0_VARIANT := Non-eMMC
-  DEVICE_DTS := armada-3720-espressobin
+  SOC := armada-3720
 endef
 TARGET_DEVICES += globalscale_espressobin
 
@@ -18,7 +18,7 @@ define Device/globalscale_espressobin-emmc
   DEVICE_ALT0_VENDOR := Marvell
   DEVICE_ALT0_MODEL := Armada 3700 Community Board
   DEVICE_ALT0_VARIANT := eMMC
-  DEVICE_DTS := armada-3720-espressobin-emmc
+  SOC := armada-3720
 endef
 TARGET_DEVICES += globalscale_espressobin-emmc
 
@@ -30,7 +30,7 @@ define Device/globalscale_espressobin-v7
   DEVICE_ALT0_VENDOR := Marvell
   DEVICE_ALT0_MODEL := Armada 3700 Community Board
   DEVICE_ALT0_VARIANT := V7 Non-eMMC
-  DEVICE_DTS := armada-3720-espressobin-v7
+  SOC := armada-3720
 endef
 TARGET_DEVICES += globalscale_espressobin-v7
 
@@ -42,7 +42,7 @@ define Device/globalscale_espressobin-v7-emmc
   DEVICE_ALT0_VENDOR := Marvell
   DEVICE_ALT0_MODEL := Armada 3700 Community Board
   DEVICE_ALT0_VARIANT := V7 eMMC
-  DEVICE_DTS := armada-3720-espressobin-v7-emmc
+  SOC := armada-3720
 endef
 TARGET_DEVICES += globalscale_espressobin-v7-emmc
 

target/linux/mvebu/image/cortex-a9.mk

@@ -93,7 +93,7 @@ define Device/plathome_openblocks-ax3-4
   DEVICE_VENDOR := Plat'Home
   DEVICE_MODEL := OpenBlocks AX3
   DEVICE_VARIANT := 4 ports
-  DEVICE_DTS := armada-xp-openblocks-ax3-4
+  SOC := armada-xp
   SUPPORTED_DEVICES += openblocks-ax3-4
   BLOCKSIZE := 128k
   PAGESIZE := 1
@@ -193,7 +193,7 @@ define Device/globalscale_mirabox
   $(Device/NAND-512K)
   DEVICE_VENDOR := Globalscale
   DEVICE_MODEL := Mirabox
-  DEVICE_DTS := armada-370-mirabox
+  SOC := armada-370
   SUPPORTED_DEVICES += mirabox
 endef
 TARGET_DEVICES += globalscale_mirabox
@@ -212,7 +212,7 @@ define Device/cznic_turris-omnia
   IMAGE/$$(IMAGE_PREFIX)-sysupgrade.img.gz := boot-img | sdcard-img | gzip | append-metadata
   IMAGE/omnia-medkit-$$(IMAGE_PREFIX)-initramfs.tar.gz := omnia-medkit-initramfs | gzip
   IMAGE_NAME = $$(2)
-  DEVICE_DTS := armada-385-turris-omnia
+  SOC := armada-385
   SUPPORTED_DEVICES += armada-385-turris-omnia
 endef
 TARGET_DEVICES += cznic_turris-omnia