Deduplicate RAM defines to linker command line

Author: theotherjimmy

tools/toolchains/mbed_toolchain.py

@@ -926,24 +926,14 @@ def add_linker_defines(self):
             self.ld.append(define_string)
             self.flags["ld"].append(define_string)
 
-        flags2params = {}
-        if self.target.is_PSA_non_secure_target:
-            flags2params = {
-                "MBED_RAM_START": "target.non-secure-ram-start",
-                "MBED_RAM_SIZE": "target.non-secure-ram-size"
-            }
         if self.target.is_PSA_secure_target:
-            flags2params = {
-                "MBED_RAM_START": "target.secure-ram-start",
-                "MBED_RAM_SIZE": "target.secure-ram-size",
-                "MBED_PUBLIC_RAM_START": "target.public-ram-start",
-                "MBED_PUBLIC_RAM_SIZE": "target.public-ram-size"
-            }
-
-        for flag, param in flags2params.items():
-            define_string = self.make_ld_define(flag, params[param].value)
-            self.ld.append(define_string)
-            self.flags["ld"].append(define_string)
+            for flag, param in [
+                ("MBED_PUBLIC_RAM_START", "target.public-ram-start"),
+                ("MBED_PUBLIC_RAM_SIZE", "target.public-ram-size")
+            ]:
+                define_string = self.make_ld_define(flag, params[param].value)
+                self.ld.append(define_string)
+                self.flags["ld"].append(define_string)
 
     # Set the configuration data
     def set_config_data(self, config_data):