RMX1971: powerhint: Set screen-off schedutil ratelimits

Use a more power-friendly rate limit configuration (2ms up/down)
to reduce power consumption a bit when the screen is off.

Power results during screen off GPS usage, measured by
Alex Naidis <alex.naidis@paranoidandroid.co> on SDM845:

Before:
392mW
93.5mA

After:
378.5mW
90.2mA

Co-authored-by: Alex Naidis <alex.naidis@paranoidandroid.co>
Change-Id: I6b2f576d14d5324cc1e08cb5d0362a570967b28e
Signed-off-by: Adithya R <gh0strider.2k18.reborn@gmail.com>
Signed-off-by: Dakkshesh <dakkshesh5@gmail.com>
Signed-off-by: kaderbava <ksbava7325@gmail.com>