twl4030_charger: Fix warnings
twl4030_charger: Fix warnings

Fix warnings emitted by some versions of gcc:
drivers/power/twl4030_charger.c:490: warning: overflow in implicit constant conversion
drivers/power/twl4030_charger.c:498: warning: overflow in implicit constant conversion

While at it, also fix module_param permissions and a typo in my name.

Signed-off-by: Grazvydas Ignotas <eac34e836c3bc120048c86fead6dd0257a872a9e@gmail.com>
Signed-off-by: Jean Delvare <efca98801f3398ebd7eeff805a2c18e6c49e84d4@suse.de>
Signed-off-by: Anton Vorontsov <1d765a3da7f714ffaadb979466c507aa3415181f@gmail.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas