bsps/zynqmp: Allow any or all CGEMs to be enabled

Provide the options necessary to enable any combination of CGEM ethernet
interfaces in LibBSD. The default is still CGEM3, so this should
continue to operate as expected on typical Zynq Ultrascale+ MPSoC
development hardware.

spec/build/bsps/aarch64/xilinx-zynqmp/grp.yml

@@ -29,6 +29,14 @@ links:
   uid: optramori
 - role: build-dependency
   uid: optclkuart
+- role: build-dependency
+  uid: optcgem0
+- role: build-dependency
+  uid: optcgem1
+- role: build-dependency
+  uid: optcgem2
+- role: build-dependency
+  uid: optcgem3
 - role: build-dependency
   uid: ../../optconminor
 - role: build-dependency

spec/build/bsps/aarch64/xilinx-zynqmp/optcgem0.yml

@@ -0,0 +1,16 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-boolean: null
+- env-enable: null
+- define-condition: null
+build-type: option
+copyrights:
+- Copyright (C) 2021 On-Line Applications Research
+default: false
+default-by-variant: []
+description: |
+  Enable support for CGEM0
+enabled-by: true
+links: []
+name: BSP_XILINX_ZYNQMP_USE_CGEM0
+type: build

spec/build/bsps/aarch64/xilinx-zynqmp/optcgem1.yml

@@ -0,0 +1,16 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-boolean: null
+- env-enable: null
+- define-condition: null
+build-type: option
+copyrights:
+- Copyright (C) 2021 On-Line Applications Research
+default: false
+default-by-variant: []
+description: |
+  Enable support for CGEM1
+enabled-by: true
+links: []
+name: BSP_XILINX_ZYNQMP_USE_CGEM1
+type: build

spec/build/bsps/aarch64/xilinx-zynqmp/optcgem2.yml

@@ -0,0 +1,16 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-boolean: null
+- env-enable: null
+- define-condition: null
+build-type: option
+copyrights:
+- Copyright (C) 2021 On-Line Applications Research
+default: false
+default-by-variant: []
+description: |
+  Enable support for CGEM2
+enabled-by: true
+links: []
+name: BSP_XILINX_ZYNQMP_USE_CGEM2
+type: build

spec/build/bsps/aarch64/xilinx-zynqmp/optcgem3.yml

@@ -0,0 +1,16 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+actions:
+- get-boolean: null
+- env-enable: null
+- define-condition: null
+build-type: option
+copyrights:
+- Copyright (C) 2021 On-Line Applications Research
+default: true
+default-by-variant: []
+description: |
+  Enable support for CGEM3
+enabled-by: true
+links: []
+name: BSP_XILINX_ZYNQMP_USE_CGEM3
+type: build