This fixes:
[   10.440495] bcm_ns_usb2 1800c000.usb2-phy: can't request region for resource [mem 0x1800c000-0x1800cfff]
[   10.450039] bcm_ns_usb2 1800c000.usb2-phy: Failed to map DMU regs
[   10.456183] bcm_ns_usb2: probe of 1800c000.usb2-phy failed with error -16
caused by conflict in allocating resources.

Fixes: f55f1dba ("bcm53xx: switch to the kernel 5.10")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>