format: add align up/down macros

ALGIN_UP/ALIGN_DOWN macros allows to align the number to the nearest alignment
value. E.g. upward value aligment is required for DGMBS register.

Signed-off-by: Kamil Kulesza <[email protected]>

Merge pull request thesofproject#154 from thesofproject/master

test: update mixer ut

Merge pull request thesofproject#136 from tlauda/topic/host_pointer_init

host: do not initialize pointer every trigger start

Merge pull request thesofproject#77 from jajanusz/test-flags-fix-warn…

…ings

test: fix CFLAGS and LDFLAGS warnings

Merge pull request thesofproject#60 from tlauda/topic/glk_001_kw

klocwork: fix initialization of HiFi3 variables

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