ANDROID: ABI: Add symbols used by clocksource driver

Export three symbols required by timer-imx-tpm.ko

Leaf changes summary: 3 artifacts changed
Changed leaf types summary: 0 leaf type changed
Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 3 Added functions
Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable

3 Added functions:

  [A] 'function int clocksource_mmio_init(void*, const char*, unsigned long int, int, unsigned int, long long unsigned int (clocksource*)*)'
  [A] 'function u64 clocksource_mmio_readl_up(clocksource*)'
  [A] 'function void sched_clock_register(long long unsigned int ()*, int, unsigned long int)'

Bug: 194108974
Signed-off-by: Jindong Yue <jindong.yue@nxp.com>
Change-Id: I123996fc08740d3e4bf242a1913b22ca83b2e2b9