package/libsemanage: fix build with python 3.8

Fixes:
 - http://autobuild.buildroot.net/results/ad1f033def500b4354dc6261c8411f83420c409d

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libsemanage/libsemanage.mk

@@ -42,7 +42,7 @@ HOST_LIBSEMANAGE_MAKE_OPTS += \
 ifeq ($(BR2_PACKAGE_PYTHON3),y)
 HOST_LIBSEMANAGE_DEPENDENCIES += host-python3
 HOST_LIBSEMANAGE_MAKE_OPTS += \
-	PYINC="-I$(HOST_DIR)/include/python$(PYTHON3_VERSION_MAJOR)m/" \
+	PYINC="-I$(HOST_DIR)/include/python$(PYTHON3_VERSION_MAJOR)/" \
 	PYTHONLIBDIR="$(HOST_DIR)/lib/python$(PYTHON3_VERSION_MAJOR)/" \
 	PYLIBVER="python$(PYTHON3_VERSION_MAJOR)"
 else