test: ipa: rkisp1-utils: Fix coding style for template arguments The coding style names template arguments using CamelCase with an uppercase initial letter. Fix the template arguments in the rkisp1-utils test. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Paul Elder <[email protected]> Reviewed-by: Kieran Bingham <[email protected]>