build: we are kmod, not systemd
Fix copy and paste mistake.
diff --git a/configure.ac b/configure.ac
index ecf3e83..92790db 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,8 +18,8 @@
AM_SILENT_RULES([yes])
LT_INIT([disable-static pic-only])
-AS_IF([test "x$enable_static" = "xyes"], [AC_MSG_ERROR([--enable-static is not supported by systemd])])
-AS_IF([test "x$enable_largefile" = "xno"], [AC_MSG_ERROR([--disable-largefile is not supported by systemd])])
+AS_IF([test "x$enable_static" = "xyes"], [AC_MSG_ERROR([--enable-static is not supported by kmod])])
+AS_IF([test "x$enable_largefile" = "xno"], [AC_MSG_ERROR([--disable-largefile is not supported by kmod])])
#####################################################################
# Program checks and configurations