From b3fdd32799d834e2626fae087906e886037350c6 Mon Sep 17 00:00:00 2001
From: York Sun <yorksun@freescale.com>
Date: Mon, 17 Aug 2015 11:53:48 -0700
Subject: [PATCH] i2c: mux: Add register-based mux i2c-mux-reg

Based on i2c-mux-gpio driver, similarly the register-based mux
switch from one bus to another by setting a single register.
The register can be on PCIe bus, local bus, or any memory-mapped
address. The endianness of such register can be specified in device
tree if used, or in platform data.

Signed-off-by: York Sun <yorksun@freescale.com>
Acked-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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