busybox: add patch from buildroot

package/busybox/patches/004-libbb-sha-add-missing-guard.patch

@@ -0,0 +1,17 @@
+diff --git a/libbb/hash_md5_sha.c b/libbb/hash_md5_sha.c
+index 57a801459..75a61c32c 100644
+--- a/libbb/hash_md5_sha.c
++++ b/libbb/hash_md5_sha.c
+@@ -1313,7 +1313,9 @@ unsigned FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf)
+ 	hash_size = 8;
+ 	if (ctx->process_block == sha1_process_block64
+ #if ENABLE_SHA1_HWACCEL
++# if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
+ 	 || ctx->process_block == sha1_process_block64_shaNI
++# endif
+ #endif
+ 	) {
+ 		hash_size = 5;
+-- 
+2.48.1
+