commit 6eb5d146d4535 ("ARM: cns3xxx: Use IO memory accessors everywhere")
breaks cns3xxx_pwr_soft_rst_force() function, so that it doesn't write
cleared bit into the register.
This patch fixes the issue by adding the necessary __raw_writel().
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>