Squashed update of kernel from 3.4.53 to 3.4.54
Revert "ARM: 7765/1: perf: Record the user-mode PC in the call chain."

 * Causes battery charging to sometimes fail.

This reverts commit cd8bca6fe4862f5af7244a5f5e4b08788ccaff11.
Squashed update of kernel from 3.4.54 to 3.4.55