ARM: dts: bcm2711-rpi-4-b: I2C aliases and pulls

The I2C interface nodes need aliases to give them fixed bus numbers,
and setting the pulls on the GPIOs (particularly 9-13) increases the
chances of the bus working with weak or absent external pulls.

See: https://www.raspberrypi.org/forums/posting.php?mode=reply&f=107&t=248439



Signed-off-by: Phil Elwell <phil@raspberrypi.org>