[yocto] [meta-raspberrypi][PATCH] README: document 64 bit r-pi3 variant for MACHINE

[Paul Gortmaker]

Signed-off-by: Paul Gortmaker <paul.gortmaker at windriver.com>
---
 README | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README b/README
index 9fdd5eb523df..19c38c3a085a 100644
--- a/README
+++ b/README
@@ -80,6 +80,7 @@ c. Set MACHINE in local.conf to one of the supported boards:
     - raspberrypi0
     - raspberrypi2
     - raspberrypi3
+    - raspberrypi3-64 (64 bit kernel & userspace)
     - raspberrypi-cm (dummy alias for raspberrypi)
     - raspberrypi-cm3 (dummy alias for raspberrypi2)
 d. bitbake rpi-hwup-image
-- 
2.7.4