Merge pull request #10387 from kjbracey-arm/add_fpu_atmel

Atmel SAMG55: Cortex-M4 -> Cortex-M4F

Author: 0xc0170

targets/targets.json

@@ -6787,7 +6787,7 @@
     },
     "SAMG55J19": {
         "inherits": ["Target"],
-        "core": "Cortex-M4",
+        "core": "Cortex-M4F",
         "extra_labels": ["Atmel", "SAM_CortexM4", "SAMG55"],
         "macros": [
             "__SAMG55J19__",