vpmu: Some vpmu cleanups

Hi,

these 3 patches do some cleanups in the vpmu stuff.

patch 1/3: The 'struct vpmu_struct' contains an item 'flags' used to contain
state bits.
Macros are introduced to set/reset/check the bits and clear the item.

patch 2/3: Remove some some unnecessary spaces at the end of lines.

patch 3/3: The define PASSIVE_DOMAIN_ALLOCATED is renamed to
VPMU_PASSIVE_DOMAIN_ALLOCATED to follow the scheme that the defines starts with the VPMU_ in front.

Thanks.

Dietmar.

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