package/sysdig: fix DRIVER_NAME definition

When I wrote the previous commit, I was not fully focused and wrote:
-DDRIVER_NAME=$(FALCOSECURITY_LIBS_DRIVER_NAME.)
Which leaded to DRIVER_NAME to be empty.
So, it was not possible to use sysdig due to the following error message:
error opening device /dev/0. Make sure you have root credentials and that the  module is loaded.

Fixes: ea86757e51cf ("package/sysdig: bump to 0.29.1")
Signed-off-by: Francis Laniel <flaniel@linux.microsoft.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/sysdig/sysdig.mk

@@ -28,7 +28,7 @@ SYSDIG_DEPENDENCIES = \
 SYSDIG_CONF_OPTS += -DFALCOSECURITY_LIBS_SOURCE_DIR=$(FALCOSECURITY_LIBS_SRCDIR) \
 	-DBUILD_DRIVER=OFF \
 	-DGRPC_CPP_PLUGIN=$(HOST_DIR)/bin/grpc_cpp_plugin \
-	-DDRIVER_NAME=$(FALCOSECURITY_LIBS_DRIVER_NAME.) \
+	-DDRIVER_NAME=$(FALCOSECURITY_LIBS_DRIVER_NAME) \
 	-DENABLE_DKMS=OFF \
 	-DUSE_BUNDLED_DEPS=OFF \
 	-DWITH_CHISEL=ON \