FROMLIST: Bluetooth: hci_bcm: Ignore deprecated command fail case

Broadcom VSC uart_clock_setting is deprecated in
newer controllers. Ignore error if the controller
returns invalid / bad request code.

Bug: 169169194
Link: https://lkml.org/lkml/2020/10/14/94


Change-Id: Ib765c5ceb71b216346216fd48eec2609a8839a37
Signed-off-by: Amitesh Chandra <amitesh.chandra@broadcom.com>
Signed-off-by: Manoj Babulal <manoj.babulal@broadcom.com>
Signed-off-by: Cheney Ni <cheneyni@google.com>
(cherry picked from commit 72865686cd0d69aa1ca0090422064d1da996bcb9)
Signed-off-by: Will McVicker <willmcvicker@google.com>
(cherry picked from commit 7cf0de7d8390b4a55a8f559acd5df6fc049a51aa)