MAINTAINERS: Update cxl/ocxl email address

Use my @linux.ibm.com email to avoid a layer of redirection.
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

MAINTAINERS

@@ -4291,7 +4291,7 @@ F:	drivers/net/ethernet/chelsio/cxgb4vf/
 
 CXL (IBM Coherent Accelerator Processor Interface CAPI) DRIVER
 M:	Frederic Barrat <fbarrat@linux.ibm.com>
-M:	Andrew Donnellan <andrew.donnellan@au1.ibm.com>
+M:	Andrew Donnellan <ajd@linux.ibm.com>
 L:	linuxppc-dev@lists.ozlabs.org
 S:	Supported
 F:	arch/powerpc/platforms/powernv/pci-cxl.c
@@ -11170,7 +11170,7 @@ F:	tools/objtool/
 
 OCXL (Open Coherent Accelerator Processor Interface OpenCAPI) DRIVER
 M:	Frederic Barrat <fbarrat@linux.ibm.com>
-M:	Andrew Donnellan <andrew.donnellan@au1.ibm.com>
+M:	Andrew Donnellan <ajd@linux.ibm.com>
 L:	linuxppc-dev@lists.ozlabs.org
 S:	Supported
 F:	arch/powerpc/platforms/powernv/ocxl.c