pinctrl: msm: fix up out-of-order merge conflict

pinctrl: msm: fix up out-of-order merge conflict

Commit ed28be93101a1093b779d4b953fb4cdbab5365af
"pinctrl: msm: Simplify msm_config_reg() and callers"
removed the local "reg" variable in the msm_config_reg()
function, but the earlier
commit 3cd1257dc7bc2b73379875b878afabf15a75c075
"pinctrl-msm: Support output-{high,low} configuration"
introduced a new switchclause using it.

Fix this up by removing the offending register assignment.

Reported-by: Kbuild test robot <fengguang.wu@intel.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>