esp_system, esp_common: fixes to some panic handler refactor issues

components/esp_common/linker.lf

@@ -1,4 +1,4 @@
 [mapping:esp_common]
-archive: lib_esp_common.a
+archive: libesp_common.a
 entries:
     esp_err (noflash)

components/esp_system/linker.lf

@@ -3,5 +3,4 @@ archive: libesp_system.a
 entries:
     panic (noflash)
     panic_handler (noflash)
-    reset_reason (noflash)
     system_api:esp_system_abort (noflash)