bnxt_en: replace ptp_lock with irqsave variant

bnxt_en: replace ptp_lock with irqsave variant

[ Upstream commit 4ab3e4983bcc9d9b9dd9720253cb93f44e9e657c ]

In netpoll configuration the completion processing can happen in hard
irq context which will break with spin_lock_bh() for fullfilling RX
timestamp in case of all packets timestamping. Replace it with
spin_lock_irqsave() variant.

Fixes: 7f5515d19cd7 ("bnxt_en: Get the RX packet timestamp")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Message-ID: <20241016195234.2622004-1-vadfed@meta.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sasha Levin <sashal@kernel.org>