Bluetooth: MAINTAINERS: Add Bartosz Golaszewski as Qualcomm hci_qca maintainer

There are no dedicated maintainers of Qualcomm hci_qca Bluetooth
drivers, but there should be, because these are actively used on many
old and new platforms. Bartosz Golaszewski agreed to take care of this
code.

Link: https://lore.kernel.org/r/CAMRc=MdqAATOcDPhd=u0vOb8nLxSRd7N8rLGLO8F5Ywq3+=[e-mail]/
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Bartosz Golaszewski <[e-mail]>
Signed-off-by: Luiz Augusto von Dentz <[e-mail]>

MAINTAINERS

···
 F:	drivers/net/wwan/qcom_bam_dmux.c
 
 QUALCOMM BLUETOOTH DRIVER
+M:	Bartosz Golaszewski <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 F:	drivers/bluetooth/btqca.[ch]