zynq: replace CAN kconfig options by device packages

The options are managed on a generic way by the can
kmod packages

Additionally, select can packages only for devices that
currently has CAN enabled, which is only the ZC702

Signed-off-by: Luis Araneda <luaraneda@gmail.com>

target/linux/zynq/config-4.14

@@ -81,27 +81,6 @@ CONFIG_BUILD_BIN2C=y
 CONFIG_CACHE_L2X0=y
 CONFIG_CADENCE_TTC_TIMER=y
 CONFIG_CADENCE_WATCHDOG=y
-CONFIG_CAN=y
-# CONFIG_CAN_8DEV_USB is not set
-CONFIG_CAN_BCM=y
-CONFIG_CAN_CALC_BITTIMING=y
-# CONFIG_CAN_CC770 is not set
-# CONFIG_CAN_C_CAN is not set
-CONFIG_CAN_DEV=y
-# CONFIG_CAN_EMS_USB is not set
-# CONFIG_CAN_ESD_USB2 is not set
-# CONFIG_CAN_FLEXCAN is not set
-# CONFIG_CAN_GRCAN is not set
-CONFIG_CAN_GW=y
-# CONFIG_CAN_KVASER_USB is not set
-# CONFIG_CAN_LEDS is not set
-# CONFIG_CAN_MCP251X is not set
-# CONFIG_CAN_PEAK_USB is not set
-CONFIG_CAN_RAW=y
-# CONFIG_CAN_SJA1000 is not set
-# CONFIG_CAN_SOFTING is not set
-# CONFIG_CAN_TI_HECC is not set
-CONFIG_CAN_XILINXCAN=y
 CONFIG_CHR_DEV_SG=y
 CONFIG_CLKDEV_LOOKUP=y
 CONFIG_CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK=y

target/linux/zynq/image/Makefile

@@ -74,6 +74,7 @@ define Device/xlnx_zynq-zc702
 	$(call Device/FitImageGzip)
 	DEVICE_TITLE := ZC702 Development Board
 	DEVICE_DTS := zynq-zc702
+	DEVICE_PACKAGES:=kmod-can kmod-can-xilinx-can
 endef
 TARGET_DEVICES += xlnx_zynq-zc702