UBUNTU: [Packaging] fix a mistype

BugLink: https://bugs.launchpad.net/bugs/1396654

HAVE_CPLUS_DEMANGLE_SUPPORT=1 used to be spelled incorrectly, leading to
missing C++ demangling support in perf.
Signed-off-by: Ignat Loskutov <ignat.loskutov@gmail.com>
Acked-by: Khalid Elmously <khalid.elmously@canonical.com>
Acked-by: You-Sheng Yang <vicamo.yang@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

debian/rules.d/2-binary-arch.mk

@@ -643,7 +643,7 @@ ifeq ($(do_tools_perf),true)
 	cd $(builddirpa) && $(kmake) silentoldconfig
 	cd $(builddirpa) && $(kmake) prepare
 	cd $(builddirpa)/tools/perf && \
-		$(kmake) prefix=/usr HAVE_NO_LIBBFD=1 HAVE_CPUS_DEMANGLE_SUPPORT=1 CROSS_COMPILE=$(CROSS_COMPILE) NO_LIBPYTHON=1 NO_LIBPERL=1 PYTHON=python2.7
+		$(kmake) prefix=/usr HAVE_NO_LIBBFD=1 HAVE_CPLUS_DEMANGLE_SUPPORT=1 CROSS_COMPILE=$(CROSS_COMPILE) NO_LIBPYTHON=1 NO_LIBPERL=1 PYTHON=python2.7
 endif
 ifeq ($(do_tools_x86),true)
 	cd $(builddirpa)/tools/power/x86/x86_energy_perf_policy && make CROSS_COMPILE=$(CROSS_COMPILE)