[rtems-source-builder] devel/qemu-xilinx: Fix source URL

[Alex White]

The source URL for Xilinx QEMU appears to have been incorrect from the
start. Since we are cloning a git repository, we should use 'git://'.
---
 bare/config/devel/qemu-xilinx-v2020.2-1.cfg | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bare/config/devel/qemu-xilinx-v2020.2-1.cfg b/bare/config/devel/qemu-xilinx-v2020.2-1.cfg
index 180b621..2c3fb94 100644
--- a/bare/config/devel/qemu-xilinx-v2020.2-1.cfg
+++ b/bare/config/devel/qemu-xilinx-v2020.2-1.cfg
@@ -15,7 +15,7 @@
 #
 # Checkout the version tag and initialize all submodules.
 #
-%source set qemu https://github.com/Xilinx/qemu.git?checkout=%{qemu_version}?submodule=dtc?submodule=slirp?submodule=ui/keycodemapdb?submodule=tests/fp/berkeley-softfloat-3?submodule=tests/fp/berkeley-testfloat-3
+%source set qemu git://github.com/Xilinx/qemu.git?protocol=https?checkout=%{qemu_version}?submodule=dtc?submodule=slirp?submodule=ui/keycodemapdb?submodule=tests/fp/berkeley-softfloat-3?submodule=tests/fp/berkeley-testfloat-3
 
 #
 # The Qemu build instructions. We use 5.x.x Release 1.
-- 
2.34.1