qemu: update to revision
6ac4597
This includes following fixes:
6ac4597 QEMU:Add support for e5500 core revision v102.1 present on T1024 SOC.
b8c87e9 Synchronized Linux headers.
f2e4612 hw/arm/virt: Support -cpu host
80cd9c1 target-arm: Provide '-cpu host' when running KVM
8e1f791 target-arm: Don't hardcode KVM target CPU to be A15
885c7a9 hw/arm: Add 'virt' platform
7ea5615 target-arm: Allow secondary KVM CPUs to be booted via PSCI
c33ac75 target-arm: Add ARMCPU field for Linux device-tree 'compatible' string
79f0d1c target-arm: Provide PSCI constants to generic QEMU code
5d1a235 hw/arm/boot: Allow boards to provide an fdt blob
badc409 device_tree.c: Terminate the empty reservemap in create_device_tree()
7a6947b target-arm: Provide mechanism for getting KVM constants even if not CONFIG_KVM
Signed-off-by: Zhenhua Luo <zhenhua.luo@freescale.com>
