ld-config: Export android.hidl.memory@1.0-impl

This commit exports android.hidl.memory@1.0-impl.so from default linker
namespace to vndk (VNDK-SP) linker namespace.  This fixes
libhidlmemory.so failure.

Note: Exposing android.hidl.memory@1.0-impl.so from default linker
namespace to vndk (VNDK-SP) linker namespace shall be fine because its
APIs are frozen and won't be changed in the future.

Note: android.hidl.memory@1.0-impl.so is NOT exported to sphal linker
namespace.

Bug: 35107583
Bug: 62778280
Test: Write a test SP-HAL lib which links libhidlmemory.so, load that
SP-HAL lib into system executable, and make sure mapMemory() works.
Test: sailfish boots w/o problems.

Merged-In: Ia36350dcf1f8c8dc6d7bf2c7a6ae65e0ebaef578
Merged-In: Iddb723558c3a814a905cd42797594a707bc651da
Change-Id: I69034595b2cd355e786ce7943fed7dddf1b12525
(cherry picked from commit bd7503da)
(cherry picked from commit 3251e582)

rootdir/etc/ld.config.txt

@@ -103,7 +103,7 @@ namespace.vndk.asan.permitted.paths = /data/asan/vendor/${LIB}/hw:/vendor/${LIB}
 # to the default namespace. This is possible since their ABI is stable across
 # Android releases.
 namespace.vndk.links = default
-namespace.vndk.link.default.shared_libs = libc.so:libz.so:libm.so:libdl.so:libstdc++.so:liblog.so:libnativewindow.so:libEGL.so:libsync.so:libvndksupport.so
+namespace.vndk.link.default.shared_libs = android.hidl.memory@1.0-impl.so:libc.so:libz.so:libm.so:libdl.so:libstdc++.so:liblog.so:libnativewindow.so:libEGL.so:libsync.so:libvndksupport.so
 
 
 [vendor]