kvm: external module: test for EXT_CONFIG_KVM_TRACE instead of CONFIG_KVM_TRACE
This patch complements
800e7a37ca9ace991a6a36a0046551ec30ec3b9c
(kvm: external module: adjust KVM_TRACE support to account for host kernel).
The config variable defined on config.kbuild was renamed to
EXT_CONFIG_KVM_TRACE, but the check for the configure setting on
kernel/Makefile was not changed to the new name, making the build system
try to compile kvm_trace.c without -DEXT_CONFIG_KVM_TRACE=y, if
building using --with-kvm-trace.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>