openssl: add DEPENDS on openssl-native for rehash

openssl: add DEPENDS on openssl-native for rehash

'make rehash' used the compiled openssl to get hash value
for files, it always failed when cross compiling:

/path/to/openssl/1.0.1i-r0/openssl-1.0.1i/util/shlib_wrap.sh:
line 96: /path/to/openssl/1.0.1i-r0/openssl-1.0.1i/util/../apps/openssl:
cannot execute binary file

so add DEPENDS on openssl-native for target package and use it
instead of the one compiled from target package.

Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>