Adding meta-phytec, for phyboard-electra-am64xx-2 (#224)

Author: tro

.gitmodules

@@ -110,3 +110,7 @@
 	path = layers/sw/meta-browser
 	url = https://github.com/OSSystems/meta-browser.git
 	branch = scarthgap
+[submodule "layers/bsp/meta-phytec"]
+	path = layers/bsp/meta-phytec
+	url = https://github.com/thomas-roos/meta-phytec.git
+	branch = fix-optee-file-paths

README.md

@@ -29,6 +29,7 @@ alphabetical order for ease of selection, no preference should be inferred.
 - [`aws-ec2-arm64` / AWS EC2](meta-aws-demos/conf/devices/aws-ec2-arm64/README.md)
 - [`aws-ec2-x86-64` / AWS EC2](meta-aws-demos/conf/devices/aws-ec2-x86-64/README.md)
 - [`imx8m` / NXP](meta-aws-demos/conf/devices/imx8m/README.md)
+- [`phyboard-electra-am64xx-2` / PHYTEC](meta-aws-demos/conf/devices/phyboard-electra-am64xx-2/README.md)
 - [`qemuarm`](meta-aws-demos/conf/devices/qemuarm/README.md)
 - [`qemuarm64`](meta-aws-demos/conf/devices/qemuarm64/README.md)
 - [`qemux86-64`](meta-aws-demos/conf/devices/qemux86-64/README.md)

layers/bsp/meta-phytec

@@ -0,0 +1,5 @@
+# phyboard-electra-am64xx-2
+
+See here: https://github.com/phytec/meta-phytec/blob/scarthgap/conf/machine/phyboard-electra-am64xx-2.conf
+
+Tested with: aws-iot-greengrass-lite-demo-simple-image

meta-aws-demos/conf/devices/phyboard-electra-am64xx-2/README.md

@@ -0,0 +1,3 @@
+MACHINE = "phyboard-electra-am64xx-2"
+
+IMAGE_FSTYPES ?= "wic wic.bz2"

meta-aws-demos/conf/devices/phyboard-electra-am64xx-2/config.conf

@@ -0,0 +1,6 @@
+BBLAYERS += "\
+    ${OEROOT}/../layers/bsp/meta-phytec \
+    ${OEROOT}/../layers/bsp/meta-ti/meta-ti-bsp \
+    ${OEROOT}/../layers/bsp/meta-arm/meta-arm \
+    ${OEROOT}/../layers/bsp/meta-arm/meta-arm-toolchain \
+"