net: macb: Replace open-coded implementation with napi_schedule()

net: macb: Replace open-coded implementation with napi_schedule()

The driver currently duplicates the logic of napi_schedule() primarily
to include additional debug information. However, these debug details
are not essential for a specific driver and can be effectively obtained
through existing tracepoints in the networking core, such as
/sys/kernel/tracing/events/napi/napi_poll. Therefore, this patch
replaces the open-coded implementation with napi_schedule() to
simplify the driver's code.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Link: https://patch.msgid.link/20260402-macb-irq-v2-1-942d98ab1154@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>