tty: 8250: Add support for Intashield IS-100

stable inclusion
from stable-v6.6.1
commit 8b48255a0d3ad853965cb7cb0a361a62f78e282d
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8IKRU

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8b48255a0d3ad853965cb7cb0a361a62f78e282d



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commit 4d994e3cf1b541ff32dfb03fbbc60eea68f9645b upstream.

Add support for the Intashield IS-100 1 port serial card.

Cc: stable@vger.kernel.org
Signed-off-by: Cameron Williams <cang1@live.co.uk>
Link: https://lore.kernel.org/r/DU0PR02MB7899A0E0CDAA505AF5A874CDC4DBA@DU0PR02MB7899.eurprd02.prod.outlook.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>