power: wakeup_reason: rename irq_count to irqcount

On x86, irq_count conflicts with a declaration in
arch/x86/include/asm/processor.h

Change-Id: I3e4fde0ff64ef59ff5ed2adc0ea3a644641ee0b7
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Git-commit: c9331cabfdfec4b8b0086ed155bb28e46330b14f
Git-repo: https://android.googlesource.com/kernel/common.git


Signed-off-by: Ian Maund <imaund@codeaurora.org>