tests: blacklisted nrf51dongle for some tests

tests/pthread_rwlock/Makefile

@@ -14,6 +14,6 @@ CFLAGS += -DNATIVE_AUTO_EXIT
 
 BOARD_INSUFFICIENT_RAM += chronos mbed_lpc1768 msb-430 msb-430h stm32f0discovery \
                           pca10000 pca10005 yunjia-nrf51822 spark-core nucleo-f334 \
-                          airfy-beacon
+                          airfy-beacon nrf51dongle
 
 include $(RIOTBASE)/Makefile.include

tests/thread_cooperation/Makefile

 APPLICATION = thread_cooperation
 include ../Makefile.tests_common
 
-BOARD_INSUFFICIENT_RAM := chronos msb-430 msb-430h mbed_lpc1768 redbee-econotag stm32f0discovery \
-                          pca10000 pca10005 yunjia-nrf51822 spark-core airfy-beacon nucleo-f334
+BOARD_INSUFFICIENT_RAM := chronos msb-430 msb-430h mbed_lpc1768 \
+                          redbee-econotag stm32f0discovery pca10000 pca10005 \
+                          yunjia-nrf51822 spark-core airfy-beacon nucleo-f334 \
+                          nrf51dongle
 
 DISABLE_MODULE += auto_init
 

tests/unittests/Makefile

@@ -5,7 +5,7 @@ BOARD_INSUFFICIENT_RAM := airfy-beacon chronos msb-430 msb-430h pca10000 \
                           pca10005 redbee-econotag spark-core stm32f0discovery \
                           telosb wsn430-v1_3b wsn430-v1_4 z1 nucleo-f334 \
                           yunjia-nrf51822 samr21-xpro arduino-mega2560 \
-                          airfy-beacon
+                          airfy-beacon nrf51dongle
 
 USEMODULE += embunit