soc: integrator: Drop pointless static qualifier in integrator_soc_init()

There is no need to have the 'struct regmap *syscon_regmap' variable
static since new value always be assigned before use it.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200715024701.28356-1-yuehaibing@huawei.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>