input: qcom-hv-haptics: try with vmalloc() if allocate custom data failed

Reallocate memory using vmalloc() for custom FIFO data if the memory
allocation using kcalloc() is failed. This may happen if the vibrator
HAL is passing down a vibration effect with a very big chunk of FIFO
data and system is running out of memory.

Change-Id: I3612208df42e46a44ca0fd43ec9b4c6ca862620e
Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>