If you want to change the keymap for lslint, modify your sublime-keymap file like this. This sample code assigns build command to Command + L only when .lsl or .ossl file.

Default.sublime-keymap

[
	// for .lsl files
	{
		"keys": ["super+l"], // Change here - this is Command + L , for example
		"command": "build",
		"context":[
			{ "key": "selector", "operator": "equal", "operand": "source.lsl" }
		]
	},
	// for .ossl files
	{
		"keys": ["super+l"], // Change here
		"command": "build",
		"context":[
			{ "key": "selector", "operator": "equal", "operand": "source.ossl" }
		]
	}
]