MAINTAINERS: powerpc: Transfer PPC83XX to Christophe

Christophe volunteered[1] to maintain PPC83XX.

1: https://lore.kernel.org/all/7b1bf4dc-d09d-35b8-f4df-16bf00429b6d@csgroup.eu/Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Crystal Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231205051239.737384-1-mpe@ellerman.id.au

MAINTAINERS

@@ -12285,21 +12285,21 @@ S:	Orphan
 F:	arch/powerpc/platforms/40x/
 F:	arch/powerpc/platforms/44x/
 
-LINUX FOR POWERPC EMBEDDED PPC83XX AND PPC85XX
+LINUX FOR POWERPC EMBEDDED PPC85XX
 M:	Scott Wood <oss@buserror.net>
 L:	linuxppc-dev@lists.ozlabs.org
 S:	Odd fixes
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux.git
 F:	Documentation/devicetree/bindings/cache/freescale-l2cache.txt
 F:	Documentation/devicetree/bindings/powerpc/fsl/
-F:	arch/powerpc/platforms/83xx/
 F:	arch/powerpc/platforms/85xx/
 
-LINUX FOR POWERPC EMBEDDED PPC8XX
+LINUX FOR POWERPC EMBEDDED PPC8XX AND PPC83XX
 M:	Christophe Leroy <christophe.leroy@csgroup.eu>
 L:	linuxppc-dev@lists.ozlabs.org
 S:	Maintained
 F:	arch/powerpc/platforms/8xx/
+F:	arch/powerpc/platforms/83xx/
 
 LINUX KERNEL DUMP TEST MODULE (LKDTM)
 M:	Kees Cook <keescook@chromium.org>