musl: Set UPSTREAM_CHECK_COMMITS

(From OE-Core rev: ee80b59fba4828b88ccf4b8797a4d7816d31a60b)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/musl/musl_git.bb

@@ -84,3 +84,5 @@ RPROVIDES_${PN} += "ldd libsegfault rtld(GNU_HASH)"
 LEAD_SONAME = "libc.so"
 INSANE_SKIP_${PN}-dev = "staticdev"
 INSANE_SKIP_${PN} = "libdir"
+
+UPSTREAM_CHECK_COMMITS = "1"