nmrouter-image: cleanup redundancy and add spi tools (c and python)

Signed-off-by: Ramon Moesching <ramon.moesching@netmodule.com>

recipes-core/images/nmrouter-image.bb

@@ -4,8 +4,6 @@ SUMMARY = "nmrouter image"
 
 KERNEL_IMAGETYPE = "uImage"
 
-IMAGE_FSTYPES_append = " tar.gz "
-
 IMAGE_FEATURES_append = " \
                 package-management \
                 ssh-server-openssh \
@@ -96,6 +94,8 @@ IMAGE_INSTALL_append_am335x-vcu = " \
                 bluez5-obex \
                 bluez5-noinst-tools \
                 canutils \
+		spitools \
+		python3-periphery \
 		"
 
 FPGA_INSTALL = " \