platform: msm_shared: Update VB support

Add header only when VB2 is supported.

Change-Id: Id44e9cf058c1a83c47fbd6f10e3be5dd11194a70
diff --git a/platform/msm_shared/boot_verifier.c b/platform/msm_shared/boot_verifier.c
index 7ee4cba..6de77bf 100644
--- a/platform/msm_shared/boot_verifier.c
+++ b/platform/msm_shared/boot_verifier.c
@@ -34,7 +34,9 @@
 #include <image_verify.h>
 #include <mmc.h>
 #include <oem_keystore.h>
+#if VERIFIED_BOOT_2
 #include <avb/OEMPublicKey.h>
+#endif
 #include <openssl/asn1t.h>
 #include <openssl/x509.h>
 #include <partition_parser.h>