failed to compile kexec from git

[CAI Qian]

Looks like this is broken recently. I cloned the tree
at the top commit been,

e73d481c4add17ee953c80bb4be72372d90d93d3
ppc/uImage: Add support for RAM Disks

Then, error out.

kexec/arch/i386/x86-linux-setup.c: In function ‘setup_linux_system_parameters’:
kexec/arch/i386/x86-linux-setup.c:511:9: error: ‘kexec_flags’ undeclared (first use in this function)
kexec/arch/i386/x86-linux-setup.c:511:9: note: each undeclared identifier is reported only once for each function it appears in
make: *** [kexec/arch/i386/x86-linux-setup.o] Error 1

CAI Qian