Convert recovery to use BoringSSL instead of mincrypt.

This changes the verification code in bootable/recovery to use
BoringSSL instead of mincrypt.

Change-Id: I37b37d84b22e81c32ac180cd1240c02150ddf3a7
diff --git a/updater/Android.mk b/updater/Android.mk
index 47c56cc..7c3f616 100644
--- a/updater/Android.mk
+++ b/updater/Android.mk
@@ -34,6 +34,7 @@
     libfec_rs \
     libext4_utils_static \
     libsquashfs_utils \
+    libcrypto_utils_static \
     libcrypto_static \
     libapplypatch \
     libbase \