Bluetooth adapter is no longer appears in the system after upgrading from
5.18.2 to 5.18.4. 

The upgrade fixed system resume but completely broke bluetooth: the adapter is
not detected even after manual loading btusb.

[    4.767831] usbcore: registered new interface driver brcmfmac
[    4.767881] brcmfmac 0000:02:00.0: enabling device (0000 -> 0002)
[    4.877041] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43602-pcie
for chip BCM43602/1
[    4.877530] brcmfmac 0000:02:00.0: Direct firmware load for
brcm/brcmfmac43602-pcie.Dell Inc.-XPS 15 9550.bin failed with error -2
[    4.912301] brcmfmac 0000:02:00.0: Direct firmware load for
brcm/brcmfmac43602-pcie.Dell Inc.-XPS 15 9550.txt failed with error -2
[    4.912316] brcmfmac 0000:02:00.0: Direct firmware load for
brcm/brcmfmac43602-pcie.txt failed with error -2
[    5.400838] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43602-pcie
for chip BCM43602/1
[    5.400910] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available
(err=-2), device may have limited channels available
[    5.401855] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43602/1 wl0: Nov
10 2015 06:38:10 version 7.35.177.61 (r598657) FWID 01-ea662a8c
[    5.467935] brcmfmac 0000:02:00.0 wlp2s0: renamed from wlan0

No tools report me existing bluetooth just like if I have none