init: remove open, read, write access to 'sysfs' type.

Add write access to:
sysfs_android_usb
sysfs_leds
sysfs_power
sysfs_zram

Add setattr access to:
sysfs_android_usb
sysfs_devices_system_cpu
sysfs_lowmemorykiller
sysfs_power
sysfs_leds
sysfs_ipv4

Bug: 65643247
Test: walleye boots with no denials from init to sysfs.

Change-Id: Ibc9a54a5f43f3d53ab7cbb0fdb9589959b31ebde