[LPIA Hardy LUM] Disable RTC wake alarm to reduce power in Hibernate

[Colin Ian King]

https://bugs.launchpad.net/dennis/+bug/337943

Bug: LP#337943

LPIA Hardy Lum

Add sysfs control to enable or disable RTC Event Enable (RTC_EN) bit
of port ACPI PM1a_EVT_BLK because the BIOS overlooked this
functionality on the HP Mini. Disabling this before hibernate saves
several mAh.

Also tidied up whitespace/tab indentation and formatting.

Note that this extends the existing power management tweaks for this
particular netbook specific module.

Colin

-- 
Colin King   <colin.king at canonical.com>
"Me transmitte sursum, caledoni" 
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