Update the target specification JSON with new requirements

Author: dylanmckay

avr-atmega328p.json

@@ -1,26 +1,32 @@
 {
-  "llvm-target": "avr-unknown-unknown",
-  "cpu": "atmega328p",
-  "target-endian": "little",
-  "target-pointer-width": "16",
-  "os": "unknown",
-  "target-env": "",
-  "target-vendor": "unknown",
   "arch": "avr",
-  "data-layout": "e-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8",
-
+  "cpu": "atmega328p",
+  "data-layout": "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8",
+  "env": "",
   "executables": true,
-
   "linker": "avr-gcc",
   "linker-flavor": "gcc",
+  "linker-is-gnu": true,
+  "llvm-target": "avr-unknown-unknown",
+  "no-compiler-rt": true,
+  "os": "unknown",
+  "position-independent-executables": false,
+  "exe-suffix": ".elf",
+  "eh-frame-header": false,
   "pre-link-args": {
-    "gcc": ["-Os", "-mmcu=atmega328p"]
+    "gcc": [
+      "-Os",
+      "-mmcu=atmega328p"
+    ]
   },
-  "exe-suffix": ".elf",
-  "post-link-args": {
-    "gcc": ["-Wl,--gc-sections"]
+  "late-link-args": {
+    "gcc": [
+      "-lc",
+      "-lgcc"
+    ]
   },
-
-  "no-default-libraries": false
+  "target-c-int-width": "16",
+  "target-endian": "little",
+  "target-pointer-width": "16",
+  "vendor": "unknown"
 }
-