kernel/wrs_devices: compile wrs_devices when building kernel modules

include CROSS_COMPILE

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

kernel/Makefile

 
-DIRS = coht_vic wr_nic wr_rtu wr_pstats wr_clocksource
+DIRS = coht_vic wr_nic wr_rtu wr_pstats wr_clocksource wrs_devices
 
 # We may "LINUX ?= /usr/src/linux-wrswitch", but it's better to leave it empty
 

kernel/wrs_devices/Makefile

 LINUX ?= /lib/modules/$(shell uname -r)/build
 
+export ARCH ?= arm
+export CROSS_COMPILE ?= $(CROSS_COMPILE_ARM)
+
 all: modules
 modules:
 	$(MAKE) -C $(LINUX) M=$(shell /bin/pwd)