[MemInit] Use new MemInit API.

The system property will only disable heap memory initialization. If you
want to disable MTE (which I don't think was the subject of the original
patch), you can use the MTE sysprops: 'arm64.memtag.process.<pname> =
"off"'.

Bug: 135772972
Test: Device boots.
Change-Id: I180be76ff2f776f1ec1a607de848ff6c81da852d

camera/provider/2.4/default/service.cpp

@@ -22,9 +22,9 @@
 
 #include <android/hardware/camera/provider/2.4/ICameraProvider.h>
 #include <binder/ProcessState.h>
-#include <cutils/memory.h>
 #include <cutils/properties.h>
 #include <hidl/LegacySupport.h>
+#include <malloc.h>
 
 using android::status_t;
 using android::hardware::defaultLazyPassthroughServiceImplementation;
@@ -46,7 +46,13 @@ int main()
 
     // b/166675194
     if (property_get_bool("ro.vendor.camera.provider24.disable_mem_init", false)) {
-        process_disable_memory_mitigations();
+        if (mallopt(M_BIONIC_ZERO_INIT, 0) == 0) {
+            // Note - heap initialization is only present on devices with Scudo.
+            // Devices with jemalloc don't have heap-init, and thus the mallopt
+            // will fail. On these devices, you probably just want to remove the
+            // property.
+            ALOGE("Disabling heap initialization failed.");
+        }
     }
 
     status_t status;