Use new API to load mapper

AServiceManager_getDeclaredPassthroughHal() can replace
android_load_sphal_library().

Bug: 316051788
Test: VtsHalGraphicsAllocatorAidl_TargetTest
Change-Id: I50021790693c3ec2bce8cb4af96b0d6ee276b2e7
diff --git a/graphics/allocator/aidl/vts/VtsHalGraphicsAllocatorAidl_TargetTest.cpp b/graphics/allocator/aidl/vts/VtsHalGraphicsAllocatorAidl_TargetTest.cpp
index 4778020..0430ea7 100644
--- a/graphics/allocator/aidl/vts/VtsHalGraphicsAllocatorAidl_TargetTest.cpp
+++ b/graphics/allocator/aidl/vts/VtsHalGraphicsAllocatorAidl_TargetTest.cpp
@@ -144,7 +144,8 @@
             auto status = mAllocator->getIMapperLibrarySuffix(&mapperSuffix);
             ASSERT_TRUE(status.isOk());
             std::string lib_name = "mapper." + mapperSuffix + ".so";
-            void* so = android_load_sphal_library(lib_name.c_str(), RTLD_LOCAL | RTLD_NOW);
+            void* so = AServiceManager_openDeclaredPassthroughHal("mapper", mapperSuffix.c_str(),
+                                                                  RTLD_LOCAL | RTLD_NOW);
             ASSERT_NE(nullptr, so) << "Failed to load " << lib_name;
             auto loadIMapper = (AIMapper_loadIMapperFn)dlsym(so, "AIMapper_loadIMapper");
             ASSERT_NE(nullptr, loadIMapper) << "AIMapper_locaIMapper missing from " << lib_name;