misc: isl29003: Fix typo for get/set mode

The operation of get/set mode was same with get/set resolution. It is
a typo absolutely. This patch updates these bits operated by get/set
mode.

Signed-off-by: Zhou Xingxing <zhou_x1@hoperun.com>
Link: https://lore.kernel.org/r/1607334545-2091-1-git-send-email-zhou_x1@hoperun.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>