tests/multiboot: Add test for modules

This test case is meant to detect corruptions of the Multiboot modules
as well as the multiboot modules list and the module command lines.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/tests/multiboot/libc.h b/tests/multiboot/libc.h
index 80eec5b..04c9922 100644
--- a/tests/multiboot/libc.h
+++ b/tests/multiboot/libc.h
@@ -57,5 +57,6 @@
 /* Misc functions */
 
 void printf(const char *fmt, ...);
+void* memcpy(void *dest, const void *src, int n);
 
 #endif