regmap: port regmap_update_bits from linux
Port the regmap_update_bits function from linux v4.14-rc1 to barebox.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 1cb2517 commit 25c3fb28d8017595942115d4dbffc16d96f43930
@Steffen Trumtrar Steffen Trumtrar authored on 6 Oct 2017
Sascha Hauer committed on 16 Oct 2017
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drivers/base/regmap/regmap.c
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include/regmap.h