buildroot

support/scripts: relocate-sdk.sh now uses a normal pipe to find strings

The normal shell does not support the bashism "< <(...)". Therefore
we use a normal pipe to find files containing a specific string.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>