can not drive MCP2515

[LiXiaoxin]

With adding follows to config.txt:

dtparam=spi=on
dtoverlay=mcp2515-can0,oscillator=12000000,interrupt=25,spimaxfrequency=125000000

MCP2515 can be used normally under old firmware version:

pi@raspberrypi:~ $ vcgencmd version
Sep 30 2021 19:21:03
Copyright (c) 2012 Broadcom
version 51215b4f6e3966401ecd99652a35cf1c25069113 (clean) (release) (start)

But under new firmware version:

[code]pi@raspberrypi:~ $ dmesg | grep -i mcp
[ 6.611888] mcp251x spi0.0: MCP251x didn't enter in conf mode after reset
[ 6.612012] mcp251x spi0.0: Probe failed, err=110
[ 6.612045] mcp251x: probe of spi0.0 failed with error -110