Extend return codes for chinachip_patch().

Instead of passing error messages using a callback function (which becomes
awkward when used from a C++ class object) return distinct error codes from
chinachip_patch(). This also removes the kludge to support translations for
Rockbox Utility and moves the strings to translate to the installation class
where they belong.

As a side effect info messages won't be passed to Rockbox Utility anymore, but
the details of the patching progress aren't of that much interest for the user
anyway.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31115 a1c6a512-1295-4272-9138-f99709370657

rbutil/chinachippatcher/chinachip.h

@@ -26,11 +26,24 @@
 extern "C" {
 #endif
 
-int chinachip_patch(const char* firmware, const char* bootloader,
-                    const char* output, const char* ccpmp_backup,
-                    void (*info)(void*, char*, ...),
-                    void (*err)(void*, char*, ...),
-                    void* userdata);
+enum cc_error {
+    E_OK,
+    E_OPEN_FIRMWARE,
+    E_OPEN_BOOTLOADER,
+    E_MEMALLOC,
+    E_LOAD_FIRMWARE,
+    E_INVALID_FILE,
+    E_NO_CCPMP,
+    E_OPEN_BACKUP,
+    E_WRITE_BACKUP,
+    E_LOAD_BOOTLOADER,
+    E_GET_TIME,
+    E_OPEN_OUTFILE,
+    E_WRITE_OUTFILE,
+};
+
+enum cc_error chinachip_patch(const char* firmware, const char* bootloader,
+                    const char* output, const char* ccpmp_backup);
 
 #ifdef __cplusplus
 }