The per CPU wake times are saved in an array called 't19x_percpu_data'. But,
there is one instance in the code where the name of the variable is misspelt.

This patch fixes this typographical error to fix compilation errors.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I52f5f0b150c51d8cc38372675415dec7944a7735