Remove unnecessary "_external" suffix from libcppbor

Test: Build
Change-Id: Ied163d1f40c3b86d7b85cae1700310f5cb674e2d
diff --git a/security/keymint/support/Android.bp b/security/keymint/support/Android.bp
index 1a8695b..5c9efef 100644
--- a/security/keymint/support/Android.bp
+++ b/security/keymint/support/Android.bp
@@ -72,7 +72,7 @@
     shared_libs: [
         "libbase",
         "libbinder_ndk",
-        "libcppbor_external",
+        "libcppbor",
         "libcppcose_rkp",
         "libcrypto",
         "libkeymaster_portable",
@@ -94,7 +94,7 @@
     ],
     shared_libs: [
         "libbase",
-        "libcppbor_external",
+        "libcppbor",
         "libcppcose_rkp",
         "libcrypto",
         "libjsoncpp",