platform.txt: Add custon flag to turn off jlink update.

Signed-off-by: zhanglinjing <Linjing.Zhang@infineon.com>

Author: LinjingZhang

platform.txt

@@ -162,8 +162,9 @@ tools.xmcflasher.erase.params=-d XMC{build.board.version}-{build.board.v} -p {up
 tools.xmcflasher.erase.pattern=python3 {cmd.path} erase {erase.params}
 tools.xmcflasher.erase.pattern.windows=python {cmd.path} erase {erase.params}
 tools.xmcflasher.upload.protocol=
+tools.xmcflasher.upload.params.custom_flag= 
 tools.xmcflasher.upload.params.verbose=--verbose
 tools.xmcflasher.upload.params.quiet=
-tools.xmcflasher.upload.params=-d XMC{build.board.version}-{build.board.v} -p {upload.port.address} -f {build.path}/{build.project_name}.hex {upload.verbose}
+tools.xmcflasher.upload.params=-d XMC{build.board.version}-{build.board.v} -p {upload.port.address} -f {build.path}/{build.project_name}.hex {upload.verbose} {upload.custom_flag}
 tools.xmcflasher.upload.pattern=python3 {cmd.path} upload {upload.params}
 tools.xmcflasher.upload.pattern.windows=python {cmd.path} upload {upload.params}