hikey: enable SHA1 and SHA256 crypto extensions by default on aarch32
hikey: enable SHA1 and SHA256 crypto extensions by default on aarch32

This results in a 3.4x speed improvement on a mixed SHA1 and SHA256 test.
I used xtest 4001, modified to run 2 test loops (one for SHA1 and one for
SHA256) on a 32 KiB buffer. The buffer is hashed 10,000 times in each
loop. I measured the total elapsed time for a test run.
aarch64 numbers are given for comparison although crypto extensions are
not supported in this case.

Test case       # runs    min    avg    max  stddev   relative
                          (s)    (s)    (s)     (%)      speed
--------------  ------  -----  -----  -----  ------  ---------
aarch32, no CE      10  18.65  18.86  19.49     1.7       1.00
aarch32, CE         10   5.49   5.60   5.67     1.0       3.37
aarch64             10  22.02  22.14  22.83     1.2       0.85

Signed-off-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Reviewed-by: Pascal Brand <0b55292d2562685bad4ce52d64f802e8f1cd299e@linaro.org>
Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>

chshxi1989/optee_os,BreezeWu/optee_os,matt2048/optee_os,Microsoft/optee_os,Microsoft/optee_os,pascal-brand-st-dev/optee_os,BreezeWu/optee_os,Microsoft/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,matt2048/optee_os,BreezeWu/optee_os,chshxi1989/optee_os,chshxi1989/optee_os,chshxi1989/optee_os,BreezeWu/optee_os,matt2048/optee_os,Microsoft/optee_os,cedric-chaumont-st-dev/optee_os,chshxi1989/optee_os,pascal-brand-st-dev/optee_os,cedric-chaumont-st-dev/optee_os,BreezeWu/optee_os,cedric-chaumont-st-dev/optee_os,Microsoft/optee_os,matt2048/optee_os,cedric-chaumont-st-dev/optee_os,pascal-brand-st-dev/optee_os