Change max heap size to 48MB

Change-Id: I00b547960c07f1cbe753c3a1391fd3840bd70ea3
diff --git a/build/phone-hdpi-512-dalvik-heap.mk b/build/phone-hdpi-512-dalvik-heap.mk
index 788b686..16e0505 100644
--- a/build/phone-hdpi-512-dalvik-heap.mk
+++ b/build/phone-hdpi-512-dalvik-heap.mk
@@ -19,5 +19,5 @@
 
 PRODUCT_PROPERTY_OVERRIDES += \
     dalvik.vm.heapstartsize=5m \
-    dalvik.vm.heapgrowthlimit=32m \
+    dalvik.vm.heapgrowthlimit=48m \
     dalvik.vm.heapsize=128m