Fedora 25 alpha kernel (4.8-rc4) output looks effectively the same:

[   20.811692] i2c_designware 808622C1:06: I2C bus managed by PUNIT
[   20.912602] i2c_designware 808622C1:06: punit semaphore timed out, resetting
[   20.912723] i2c_designware 808622C1:06: PUNIT SEM: 2
[   20.912803] ------------[ cut here ]------------
[   20.912819] WARNING: CPU: 0 PID: 886 at drivers/i2c/busses/i2c-designware-baytrail.c:106 baytrail_i2c_acquire+0x13c/0x1f0 [i2c_designware_platform]
[   20.912821] Modules linked in: snd acpi_thermal_rel tpm_tis intel_soc_dts_iosf int340x_thermal_zone tpm_tis_core acpi_pad soundcore tpm i2c_designware_platform(+) i2c_designware_core spi_pxa2xx_platform nfsd auth_rpcgss nfs_acl lockd g
race nls_utf8 isofs squashfs mmc_block crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel fjes i2c_hid sdhci_acpi sdhci mmc_core 8021q garp stp llc mrp hid_logitech_hidpp uas usb_storage cdc_ether usbnet r8152 hid_logitech_dj 
mii sunrpc scsi_transport_iscsi loop
[   20.912879] CPU: 0 PID: 886 Comm: systemd-udevd Not tainted 4.8.0-0.rc4.git0.1.fc25.x86_64 #1
[   20.912881] Hardware name: N/A CherryTrail/Type2 - Board Product Name, BIOS YT11.6W4x64.D003 05/17/2016
[   20.912885]  0000000000000286 000000007481af87 ffff8ef97997b9c0 ffffffff833e76cd
[   20.912891]  0000000000000000 0000000000000000 ffff8ef97997ba00 ffffffff830a1d7b
[   20.912896]  0000006a7997b9e0 ffff8ef978496028 00000000fffbbdb7 ffffffffc05196d0
[   20.912902] Call Trace:
[   20.912915]  [<ffffffff833e76cd>] dump_stack+0x63/0x86
[   20.912922]  [<ffffffff830a1d7b>] __warn+0xcb/0xf0
[   20.912927]  [<ffffffff830a1ead>] warn_slowpath_null+0x1d/0x20
[   20.912932]  [<ffffffffc05188bc>] baytrail_i2c_acquire+0x13c/0x1f0 [i2c_designware_platform]
[   20.912938]  [<ffffffffc052c233>] i2c_dw_init+0x23/0x420 [i2c_designware_core]
[   20.912942]  [<ffffffffc052cff9>] i2c_dw_probe+0x39/0x1d0 [i2c_designware_core]
[   20.912947]  [<ffffffffc05184a2>] dw_i2c_plat_probe+0x1e2/0x420 [i2c_designware_platform]
[   20.912954]  [<ffffffff8353307b>] platform_drv_probe+0x3b/0xa0
[   20.912958]  [<ffffffff8352cf5c>] ? devices_kset_move_last+0x4c/0x90
[   20.912961]  [<ffffffff83530ea3>] driver_probe_device+0x223/0x430
[   20.912965]  [<ffffffff8353118f>] __driver_attach+0xdf/0xf0
[   20.912968]  [<ffffffff835310b0>] ? driver_probe_device+0x430/0x430
[   20.912972]  [<ffffffff8352e82c>] bus_for_each_dev+0x6c/0xc0
[   20.912975]  [<ffffffff835305ae>] driver_attach+0x1e/0x20
[   20.912978]  [<ffffffff8352ffc0>] bus_add_driver+0x170/0x270
[   20.912981]  [<ffffffffc051d000>] ? 0xffffffffc051d000
[   20.912984]  [<ffffffff83531ab0>] driver_register+0x60/0xe0
[   20.912987]  [<ffffffffc051d000>] ? 0xffffffffc051d000
[   20.912990]  [<ffffffff83532ff6>] __platform_driver_register+0x36/0x40
[   20.912995]  [<ffffffffc051d017>] dw_i2c_init_driver+0x17/0x1000 [i2c_designware_platform]
[   20.913000]  [<ffffffff83002190>] do_one_initcall+0x50/0x180
[   20.913006]  [<ffffffff832272f9>] ? kmem_cache_alloc_trace+0x159/0x1b0
[   20.913010]  [<ffffffff831b7b46>] ? do_init_module+0x27/0x1ef
[   20.913013]  [<ffffffff831b7b7e>] do_init_module+0x5f/0x1ef
[   20.913018]  [<ffffffff8312e3a4>] load_module+0x22c4/0x29e0
[   20.913021]  [<ffffffff8312af70>] ? __symbol_put+0x60/0x60
[   20.913026]  [<ffffffff8312ec33>] SYSC_init_module+0x173/0x190
[   20.913030]  [<ffffffff8312ed6e>] SyS_init_module+0xe/0x10
[   20.913034]  [<ffffffff83003c57>] do_syscall_64+0x67/0x160
[   20.913039]  [<ffffffff838060e1>] entry_SYSCALL64_slow_path+0x25/0x25
[   20.913042] ---[ end trace e787777b154d2d89 ]---
[   20.913045] i2c_designware 808622C1:06: couldn't acquire bus ownership
[   20.913177] i2c_designware: probe of 808622C1:06 failed with error -110