MAINTAINERS: add git URL for KVM/ARM

Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

MAINTAINERS

@@ -6102,6 +6102,7 @@ M:	Marc Zyngier <marc.zyngier@arm.com>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	kvmarm@lists.cs.columbia.edu
 W:	http://systems.cs.columbia.edu/projects/kvm-arm
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git
 S:	Supported
 F:	arch/arm/include/uapi/asm/kvm*
 F:	arch/arm/include/asm/kvm*