ti-extras: Clean up

The TI_EXTRAS infrastructure needs a little tweaking to support turning
on multiple extra options at the same time.

1) Since TI_EXTRAS can be a space separated list and not a single fixed
value, we need to change how we detect when to include the TI_EXTRA
values.

2) The tie-jailhouse overrides were being a little too heavy handed.
All of the variables that are changed for any given extra feature needs
to use the proper variable override.  This was most important for the
COMPATIBLE_MACHINE settings.

3) Move the ti-extras out of specific machine configs and into the
ti-soc so that all machines can use the extras.

Signed-off-by: Ryan Eatmon <reatmon@ti.com>

meta-ti-bsp/conf/machine/include/ti-extras.inc

@@ -1,4 +1,4 @@
 # Add TI_EXTRAS to machine overrides so we get access to e.g. 'jailhouse'
 
 TI_EXTRAS ??= ""
-MACHINEOVERRIDES =. "${@ '${TI_EXTRAS}:' if d.getVar('TI_EXTRAS').startswith('tie-') else ''}"
+MACHINEOVERRIDES =. "${@ ':'.join('${TI_EXTRAS}'.strip().split()) + ':' if d.getVar('TI_EXTRAS') else ''}"

meta-ti-bsp/conf/machine/include/ti-soc.inc

@@ -2,6 +2,7 @@
 # and platforms defined in meta-ti to allow BSP-level overrides.
 SOC_FAMILY = "ti-soc"
 require conf/machine/include/soc-family.inc
+require conf/machine/include/ti-extras.inc
 
 # kernel, initrd load addresses for the fitImage in all TI platforms
 UBOOT_ENTRYPOINT = "0x82000000"