[PATCH 1/3] iio: accel: bmc150: Improve ACPI enumeration support

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Hi All,

This series improves support for ACPI enumeration of bmc150 accels
described by an ACPI node with an ACPI hw-id of BOSC0200:

1. Add support for nodes which describe 2 acceleromers in a single node,
fixing: https://bugzilla.kernel.org/show_bug.cgi?id=198671

2. Add support for reading the mount-matrix from the ACPI node.

This is done in patches 2 - 3, patch 1 is a trivial cleanup which I noticed
could be done while working on this.

Patch 2 is based on an earlier patch for this from Jeremy Cline:
https://lore.kernel.org/r/010001602cf53153-39ad69f1-1b39-4e6d-a748-9455a16c2fbd-000000@xxxxxxxxxxxxxxxxxxx

That patch was put on hold because normally ACPI nodes which describe
multiple i2c-clients in a single node are handled by:
drivers/platform/x86/i2c-multi-instantiate.c

Which I tried to do at first, but as explained in the commit msg
of the updated patch, that is not possible in this special case
(because it would cause userspace breakage due to the modalias changing).

Regards,

Hans




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