sysmobts: Reduce the number of images we build

We need a jffs2/ubi depending on the age of the hardware and
maybe a tar.bz2 so we can easily inspect an image without
playing with mtdram. We almost never need a ubifs and certainly
not a cpio.

conf/machine/include/sysmobts.inc

@@ -33,8 +33,6 @@ MACHINE_ESSENTIAL_EXTRA_RDEPENDS = "\
 	kernel-module-nls-utf8 \
 	kernel-module-rtfifo "
 
-IMAGE_FSTYPES ?= "tar.bz2 cpio.gz ubifs ubi jffs2"
-
 MACHINE_EXTRA_RDEPENDS = "\
 	task-sysmocom-bts \
 	sysmobts-firmware \

conf/machine/sysmobts-v1.conf

@@ -10,5 +10,6 @@ EXTRA_IMAGECMD_jffs2 = "--little-endian --eraseblock=0x20000 --pagesize=0x800 --
 MKUBIFS_ARGS = "-m 2048 -e 129024 -c 400"
 UBINIZE_ARGS = "-m 2048 -p 128KiB -s 512"
 
+IMAGE_FSTYPES ?= "tar.bz2 jffs2"
 require conf/machine/include/sysmobts.inc
 

conf/machine/sysmobts-v2.conf

@@ -11,4 +11,5 @@ MKUBIFS_ARGS ?= "-m 2048 -e 129024 -c 999"
 UBINIZE_ARGS ?= "-m 2048 -p 128KiB -s 512"
 
 
+IMAGE_FSTYPES ?= "tar.bz2 ubi"
 require conf/machine/include/sysmobts.inc