Yocto 2.3

Move OpenBMC to Yocto 2.3(pyro).

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I50744030e771f4850afc2a93a10d3507e76d36bc
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Resolves: openbmc/openbmc#2461
diff --git a/import-layers/meta-raspberrypi/conf/machine/raspberrypi3.conf b/import-layers/meta-raspberrypi/conf/machine/raspberrypi3.conf
index 884d875..b511bec 100644
--- a/import-layers/meta-raspberrypi/conf/machine/raspberrypi3.conf
+++ b/import-layers/meta-raspberrypi/conf/machine/raspberrypi3.conf
@@ -10,6 +10,6 @@
 
 SDIMG_KERNELIMAGE ?= "kernel7.img"
 KERNEL_DEFCONFIG ?= "bcm2709_defconfig"
-UBOOT_MACHINE ?= "rpi_2_config"
+UBOOT_MACHINE = "rpi_3_32b_config"
 SERIAL_CONSOLE ?= "115200 ttyS0"
 VC4_CMA_SIZE ?= "cma-256"