Move API levels from `uint32_t` to `int`.

(cherrypick of a6c71a09670ca636cca5cfea9d74b03a951e2b5e.)

Bug: N/A
Test: builds
Change-Id: I9c414e30e3c4fe2a4e16a2fe4ce18eae85fe4844
diff --git a/linker/dlfcn.cpp b/linker/dlfcn.cpp
index dfe8e8c..45ae6ed 100644
--- a/linker/dlfcn.cpp
+++ b/linker/dlfcn.cpp
@@ -57,7 +57,7 @@
                            const android_dlextinfo* extinfo,
                            const void* caller_addr) __LINKER_PUBLIC__;
 void __loader_android_dlwarning(void* obj, void (*f)(void*, const char*)) __LINKER_PUBLIC__;
-uint32_t __loader_android_get_application_target_sdk_version() __LINKER_PUBLIC__;
+int __loader_android_get_application_target_sdk_version() __LINKER_PUBLIC__;
 void __loader_android_get_LD_LIBRARY_PATH(char* buffer, size_t buffer_size) __LINKER_PUBLIC__;
 android_namespace_t* __loader_android_get_exported_namespace(const char* name) __LINKER_PUBLIC__;
 bool __loader_android_init_anonymous_namespace(const char* shared_libs_sonames,
@@ -67,7 +67,7 @@
                                       const char* shared_libs_sonames) __LINKER_PUBLIC__;
 bool __loader_android_link_namespaces_all_libs(android_namespace_t* namespace_from,
                                                android_namespace_t* namespace_to) __LINKER_PUBLIC__;
-void __loader_android_set_application_target_sdk_version(uint32_t target) __LINKER_PUBLIC__;
+void __loader_android_set_application_target_sdk_version(int target) __LINKER_PUBLIC__;
 void __loader_android_update_LD_LIBRARY_PATH(const char* ld_library_path) __LINKER_PUBLIC__;
 void __loader_cfi_fail(uint64_t CallSiteTypeId,
                        void* Ptr,
@@ -204,13 +204,13 @@
 }
 #endif
 
-void __loader_android_set_application_target_sdk_version(uint32_t target) {
+void __loader_android_set_application_target_sdk_version(int target) {
   // lock to avoid modification in the middle of dlopen.
   ScopedPthreadMutexLocker locker(&g_dl_mutex);
   set_application_target_sdk_version(target);
 }
 
-uint32_t __loader_android_get_application_target_sdk_version() {
+int __loader_android_get_application_target_sdk_version() {
   return get_application_target_sdk_version();
 }