Fix undesirable ripple effect on GalleryGridView

Set focusableInTouchMode = ture for workaround.

Test: Long-press a media and release it on GalleryGridView, check
      whether there is any undesirable ripple effect or not.

Change-Id: I076c47338d11b396210648a68ae393761d334c03
Signed-off-by: Taesu Lee <taesu82.lee@samsung.com>
1 file changed