ARM: dts: qcom: Fix the pinctrl node size for msm cobalt

The pinctrl device node size is incorrect and is mapping
a whole range of io memory that it doesn't own. Fix it.

Change-Id: Ib6b29a45fafa7026015152d42a79198634bf8d76
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>