tracing: Have function graph tracer option funcgraph-irqs be per instance

tracing: Have function graph tracer option funcgraph-irqs be per instance

Currently the option to trace interrupts in the function graph tracer is
global when the interface is per-instance. Changing the value in one
instance will affect the results of another instance that is also running
the function graph tracer. This can lead to confusing results.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://patch.msgid.link/20251114192318.613867934@kernel.org
Fixes: c132be2c4fcc1 ("function_graph: Have the instances use their own ftrace_ops for filtering")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>