compulab-pxa270: cond assign variables to allow being overridden in local.conf

diff --git a/conf/machine/compulab-pxa270.conf b/conf/machine/compulab-pxa270.conf
index 95be162..d8d9264 100644 (file)
--- a/conf/machine/compulab-pxa270.conf
+++ b/conf/machine/compulab-pxa270.conf
@@ -4,7 +4,7 @@
 #OLDEST_KERNEL = "2.6.16"
 TARGET_ARCH = "arm"
 PREFERRED_VERSION_compulab-pxa270 = "2.6.16"
-GUI_MACHINE_CLASS = "bigscreen"
+GUI_MACHINE_CLASS ?= "bigscreen"
 
 PREFERRED_PROVIDER_virtual/kernel = "${MACHINE}"
 PACKAGE_EXTRA_ARCHS = "armv4 armv5te"
@@ -12,10 +12,10 @@ PACKAGE_EXTRA_ARCHS = "armv4 armv5te"
 require conf/machine/include/tune-xscale.conf
 
 # used by sysvinit_2
-SERIAL_CONSOLE = "38400 ttySA0"
+SERIAL_CONSOLE ?= "38400 ttySA0"
 
 # used by opie-collections.inc
-ROOT_FLASH_SIZE = "32"
+ROOT_FLASH_SIZE ?= "32"
 
 EXTRA_IMAGECMD_jffs2 = "--pad=0x1000000 --eraseblock=0x40000"