Rename core folder to nRF5

boards.txt

@@ -33,7 +33,7 @@ nRF52DK.upload.native_usb=false
 nRF52DK.build.mcu=cortex-m4
 nRF52DK.build.f_cpu=16000000
 nRF52DK.build.board=NRF52_DK
-nRF52DK.build.core=nRF52
+nRF52DK.build.core=nRF5
 nRF52DK.build.variant=nRF52DK
 nRF52DK.build.variant_system_lib=
 nRF52DK.build.extra_flags=

platform.txt

@@ -14,7 +14,7 @@
 # License along with this library; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
-name=Nordic NRF52 Boards
+name=Nordic Semiconductor NRF5 Boards
 version=0.0.0
 
 # Compile variables
@@ -48,7 +48,7 @@ compiler.define=-DARDUINO=
 # this can be overriden in boards.txt
 build.extra_flags=
 
-nrf.sdk.path={runtime.platform.path}/cores/nRF52/nRF5_SDK_11
+nrf.sdk.path={runtime.platform.path}/cores/nRF5/nRF5_SDK_11
 
 compiler.nrf.flags=-DNRF52 "-I{nrf.sdk.path}/components/toolchain/" "-I{nrf.sdk.path}/components/toolchain/CMSIS/Include" "-I{nrf.sdk.path}/components/toolchain/gcc/" "-I{nrf.sdk.path}/components/drivers_nrf/hal/" "-I{nrf.sdk.path}/components/device/"