Merge pull request #1 from Lauszus/dev

Added _pvHeapStart entry

devices/MKL03Z4/gcc/MKL03Z32xxx4_flash.ld

@@ -238,6 +238,7 @@ SECTIONS
     . = ALIGN(8);
     __end__ = .;
     PROVIDE(end = .);
+    _pvHeapStart = .; /* Add for _sbrk */
     __HeapBase = .;
     . += HEAP_SIZE;
     __HeapLimit = .;