drivers/i2c/designware: Check if the device is powered

If the device doesn't return a valid component type, that means the
device is non-functional.

The dw_i2c_regs had invalid offsets for the version field. I got the
correct value from the DesignWare DW_apb_i2c Databook v2.02a. It also
matches what the Picasso PPR says.

I also print out the version field of the controller.

BUG=b:153001807
BRANCH=none
TEST=Tested on PSP where I2C is non functional. Also tested on trembyle
and verified i2c was initialized.
Saw the following in the logs
I2C bus 2 version 0x3132322a

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: If5527972508e0f4b35cc9ecdb1491b1ce85ff3af
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2144540
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40870
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions