meta-phosphor: introduce static non-rootfs image type

Define a new image type 'static-norootfs' that takes the entire
rootfs and places it as the initramfs for the kernel's FIT image,
so that the BMC is entirely running from a ramdisk.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I0163f5be0a1b176e0db5f89b85f34e4feae8a588
diff --git a/meta-phosphor/conf/machine/include/obmc-bsp-common.inc b/meta-phosphor/conf/machine/include/obmc-bsp-common.inc
index 8a38343..e57bc64 100644
--- a/meta-phosphor/conf/machine/include/obmc-bsp-common.inc
+++ b/meta-phosphor/conf/machine/include/obmc-bsp-common.inc
@@ -6,6 +6,7 @@
 KERNEL_IMAGETYPES ?= "fitImage vmlinux"
 
 OBMC_IMAGE_INCLUDE = "static"
+OBMC_IMAGE_INCLUDE:df-obmc-static-norootfs = "static-norootfs"
 OBMC_IMAGE_INCLUDE:df-obmc-ubi-fs = "ubi-fs"
 OBMC_IMAGE_INCLUDE:df-phosphor-mmc = "mmc"