MAINTAINERS: Add entry on Loongson-2K IPMI driver

When merging the Loongson-2K BMC driver, temporarily removed the
addition of the IPMI driver entry in MAINTAINERS to avoid conflicts.
This needs to be fixed as soon as possible.

Now, adding myself as maintainer for the Loongson-2K IPMI driver.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Message-ID: <20251015095556.3736330-1-zhoubinbin@loongson.cn>
Signed-off-by: Corey Minyard <corey@minyard.net>

Author: AaronDot

MAINTAINERS

@@ -14660,6 +14660,7 @@ LOONGSON-2K Board Management Controller (BMC) DRIVER
 M:	Binbin Zhou <zhoubinbin@loongson.cn>
 M:	Chong Qiao <qiaochong@loongson.cn>
 S:	Maintained
+F:	drivers/char/ipmi/ipmi_si_ls2k.c
 F:	drivers/mfd/ls2k-bmc-core.c
 
 LOONGSON EDAC DRIVER