Merge pull request #925 from mbedmicro/sg--patch-1

RAM fix for nRF51822.sct, 32K version

Author: 0xc0170

libraries/mbed/targets/cmsis/TARGET_NORDIC/TARGET_MCU_NRF51822/TOOLCHAIN_ARM_STD/TARGET_MCU_NORDIC_32K/nRF51822.sct

@@ -5,7 +5,7 @@
 ;   *(InRoot$$Sections)
 ;   .ANY (+RO)
 ;  }
-;  RW_IRAM1 0x20000000 0x00004000  {
+;  RW_IRAM1 0x20000000 0x00008000  {
 ;   .ANY (+RW +ZI)
 ;  }
 ;}