util: move declarations out of qemu-common.h

Move declarations out of qemu-common.h for functions declared in
utils/ files: e.g. include/qemu/path.h for utils/path.c.
Move inline functions out of qemu-common.h and into new files (e.g.
include/qemu/bcd.h)

Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/linux-user/uaccess.c b/linux-user/uaccess.c
index 75d890d..0a5c0b0 100644
--- a/linux-user/uaccess.c
+++ b/linux-user/uaccess.c
@@ -1,5 +1,6 @@
 /* User memory access */
 #include "qemu/osdep.h"
+#include "qemu/cutils.h"
 
 #include "qemu.h"