[yocto] [meta-raspberrypi][PATCH v6 2/4] rpi-base.inc: support for .dtbo files for dtb overlays

[Herve Jourdain]

Kernel 4.4.6+ on RaspberryPi support .dtbo files for overlays, instead of .dtb.
Add support for .dtbo variant of overlays for the default KERNEL_DEVICETREE variable
(the list will be turned into "-overlay.dtb" by linux-raspberry-base.bbclass, if needed, depending on the kernel version)

Signed-off-by: Herve Jourdain <herve.jourdain at neuf.fr>
---
 conf/machine/include/rpi-base.inc | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/conf/machine/include/rpi-base.inc b/conf/machine/include/rpi-base.inc
index 56ca83e..47eb23b 100644
--- a/conf/machine/include/rpi-base.inc
+++ b/conf/machine/include/rpi-base.inc
@@ -22,21 +22,21 @@ KERNEL_DEVICETREE ?= " \
     bcm2709-rpi-2-b.dtb \
     bcm2710-rpi-3-b.dtb \
     \
-    overlays/hifiberry-amp-overlay.dtb \
-    overlays/hifiberry-dac-overlay.dtb \
-    overlays/hifiberry-dacplus-overlay.dtb \
-    overlays/hifiberry-digi-overlay.dtb \
-    overlays/i2c-rtc-overlay.dtb \
-    overlays/iqaudio-dac-overlay.dtb \
-    overlays/iqaudio-dacplus-overlay.dtb \
-    overlays/lirc-rpi-overlay.dtb \
-    overlays/pitft22-overlay.dtb \
-    overlays/pitft28-resistive-overlay.dtb \
-    overlays/pps-gpio-overlay.dtb \
-    overlays/rpi-ft5406-overlay.dtb \
-    overlays/w1-gpio-overlay.dtb \
-    overlays/w1-gpio-pullup-overlay.dtb \
-    overlays/pi3-miniuart-bt-overlay.dtb \
+    overlays/hifiberry-amp.dtbo \
+    overlays/hifiberry-dac.dtbo \
+    overlays/hifiberry-dacplus.dtbo \
+    overlays/hifiberry-digi.dtbo \
+    overlays/i2c-rtc.dtbo \
+    overlays/iqaudio-dac.dtbo \
+    overlays/iqaudio-dacplus.dtbo \
+    overlays/lirc-rpi.dtbo \
+    overlays/pitft22.dtbo \
+    overlays/pitft28-resistive.dtbo \
+    overlays/pps-gpio.dtbo \
+    overlays/rpi-ft5406.dtbo \
+    overlays/w1-gpio.dtbo \
+    overlays/w1-gpio-pullup.dtbo \
+    overlays/pi3-miniuart-bt.dtbo \
     "
 KERNEL_IMAGETYPE ?= "Image"
 
-- 
2.7.4