qttools: DEPENDS on icu
qttools: DEPENDS on icu

This fixes a following QA issue:
| QA Issue: nativesdk-qtbase-tools rdepends on nativesdk-libicui18n, but it isn't a build dependency.
| QA Issue: nativesdk-qtbase-tools rdepends on nativesdk-libicuuc, but it isn't a build dependency.
| QA Issue: nativesdk-qtbase-tools rdepends on nativesdk-libicudata, but it isn't a build dependency.

Signed-off-by: Ming Liu <11a3c78e98e9b0d6c61303d566e3efca80e669cf@external.atlascopco.com>
Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

meta-qt5/meta-qt5,meta-qt5/meta-qt5,kraj/meta-qt5,kraj/meta-qt5,sapiippo/meta-qt5,schnitzeltony/meta-qt5,schnitzeltony/meta-qt5,sapiippo/meta-qt5