MAINTAINERS: Update powerpc KVM entry

Paul is no longer handling patches for kvmppc.

Instead we'll treat them as regular powerpc patches, taking them via the
powerpc tree, using the topic/ppc-kvm branch when necessary.

Also drop the web reference, it doesn't have any information
specifically relevant to powerpc KVM.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Acked-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211027061646.540708-1-mpe@ellerman.id.au

MAINTAINERS

@@ -10260,11 +10260,8 @@ F:	arch/mips/include/uapi/asm/kvm*
 F:	arch/mips/kvm/
 
 KERNEL VIRTUAL MACHINE FOR POWERPC (KVM/powerpc)
-M:	Paul Mackerras <paulus@ozlabs.org>
-L:	kvm-ppc@vger.kernel.org
-S:	Supported
-W:	http://www.linux-kvm.org/
-T:	git git://github.com/agraf/linux-2.6.git
+L:	linuxppc-dev@lists.ozlabs.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git topic/ppc-kvm
 F:	arch/powerpc/include/asm/kvm*
 F:	arch/powerpc/include/uapi/asm/kvm*
 F:	arch/powerpc/kernel/kvm*