Include stringify.h to avoid this build error:
 arch/parisc/include/asm/jump_label.h: error: expected ':' before '__stringify'
 arch/parisc/include/asm/jump_label.h: error: label 'l_yes' defined but not used [-Werror=unused-label]
Signed-off-by: NHelge Deller <deller@gmx.de>
Reported-by: Nkernel test robot <lkp@intel.com>