Make sdcardfs the default

This will cause devices to default to sdcardfs if the kernel
supports it.

Test: Booted a wiped device, ensured sdcardfs was enabled
Change-Id: Ibce012b841b78d37ade668a38e91dca74a637867
diff --git a/sdcard/sdcard.cpp b/sdcard/sdcard.cpp
index df3ce85..c342cf8 100644
--- a/sdcard/sdcard.cpp
+++ b/sdcard/sdcard.cpp
@@ -420,7 +420,7 @@
     }
 
     // Fall back to device opinion about state
-    if (property_get_bool(PROP_SDCARDFS_DEVICE, false)) {
+    if (property_get_bool(PROP_SDCARDFS_DEVICE, true)) {
         LOG(WARNING) << "Device explicitly enabled sdcardfs";
         return supports_sdcardfs();
     } else {