targets: add x86-legacy subtarget

As x86-generic is compiled to pentium4 (and newer) there is a need for
a subtarget for older devices. The x86-legacy subtarget is set to
compile to pentium (and newer) and should support even very old devics.

x86-legacy includes the packages from x86.inc to only maintain one
package list. The three excludes are because the packages do not exist
for x86-legacy.

targets/targets.mk

@@ -19,6 +19,7 @@ $(eval $(call GluonTarget,ramips,rt305x))
 $(eval $(call GluonTarget,sunxi,cortexa7))
 $(eval $(call GluonTarget,x86,generic))
 $(eval $(call GluonTarget,x86,geode))
+$(eval $(call GluonTarget,x86,legacy))
 $(eval $(call GluonTarget,x86,64))
 
 

targets/x86-legacy

+include 'x86.inc'
+
+packages {
+        '-kmod-gpio-nct5104d',
+        '-kmod-leds-gpio',
+        '-kmod-leds-apu2',
+}
+
+factory_image('x86-legacy', 'combined-squashfs', '.img.gz')
+sysupgrade_image('x86-legacy', 'combined-squashfs', '.img.gz')