Merge branch 'Musca_march' of https://github.com/deepikabhavnani/mbed-os into dev_rollup

Author: 0xc0170

tools/toolchains/gcc.py

@@ -63,7 +63,7 @@ def __init__(self, target,  notify=None, macros=None, build_profile=None,
         elif target.core.startswith("Cortex-M33F"):
             self.cpu = ["-mcpu=cortex-m33+nodsp"]
         elif target.core.startswith("Cortex-M33"):
-            self.cpu = ["-mcpu=cortex-m33+nodsp+nofp"]
+            self.cpu = ["-march=armv8-m.main"]
         else:
             self.cpu = ["-mcpu={}".format(target.core.lower())]