ARM: dts: motorola-mapphone: Add mdm6600 sleep pins

ARM: dts: motorola-mapphone: Add mdm6600 sleep pins

The sleep pins never got added earlier probably because the driver was not
behaving correctly with the sleep pins. We need the sleep pins to prevent
the modem from waking up on it's own if the reset pin glitches in deeper
SoC idle states.

Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Message-ID: <20230911035828.36984-1-tony@atomide.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>