MAINTAINERS: Update Shawn Guo's address for HiSilicon PCIe controller driver

Shawn is no longer with Linaro.  Use his korg email address instead.

Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260224075753.122091-1-shawnguo@kernel.org

Author: Shawn Guo

MAINTAINERS

@@ -20509,7 +20509,7 @@ F:	Documentation/devicetree/bindings/pci/hisilicon,kirin-pcie.yaml
 F:	drivers/pci/controller/dwc/pcie-kirin.c
 
 PCIE DRIVER FOR HISILICON STB
-M:	Shawn Guo <shawn.guo@linaro.org>
+M:	Shawn Guo <shawnguo@kernel.org>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt