defconfig: disable msm-dcvs

It's not stable anymore:

MSM_DCVS: __msm_dcvs_change_freq: Core cpu0 failed to set freq 702000

<6>[ 1031.005554,0] msm_dcvs/160    D c07c5610     0  2016      2
0x00000000
<4>[ 1031.005585,0] [<c07c5610>] (__schedule+0x784/0x870) from
[<c07c5b98>] (schedule_timeout+0x28/0x35c)
<4>[ 1031.005585,0] [<c07c5b98>] (schedule_timeout+0x28/0x35c) from
[<c07c4d30>] (wait_for_common+0xec/0x180)
<4>[ 1031.005615,0] [<c07c4d30>] (wait_for_common+0xec/0x180) from
[<c01179c4>] (msm_cpufreq_target+0x164/0x1a4)
<4>[ 1031.005646,0] [<c01179c4>] (msm_cpufreq_target+0x164/0x1a4) from
[<c0598c5c>] (__cpufreq_driver_target+0x50/0x64)
<4>[ 1031.005646,0] [<c0598c5c>] (__cpufreq_driver_target+0x50/0x64)
from [<c059f2d0>] (msm_dcvs_freq_set+0x4c/0x84)
<4>[ 1031.005676,0] [<c059f2d0>] (msm_dcvs_freq_set+0x4c/0x84) from
[<c0157064>] (msm_dcvs_do_freq+0x148/0x3f8)
<4>[ 1031.005707,0] [<c0157064>] (msm_dcvs_do_freq+0x148/0x3f8) from
[<c018b994>] (kthread+0x80/0x88)
<4>[ 1031.005707,0] [<c018b994>] (kthread+0x80/0x88) from [<c0106314>]
(kernel_thread_exit+0x0/0x8)
<6>[ 1031.005768,0] kworker/0:1     D c07c5610     0  5842      2
0x00000000
<4>[ 1031.005798,0] [<c07c5610>] (__schedule+0x784/0x870) from
[<c07c5b98>] (schedule_timeout+0x28/0x35c)

Change-Id: I49eef2e7825691cbad0c89897fefb2ed55fdd256