"[+>" more icon was never shown in PhoneStatusBar

"[+>" more icon was never show in status bar because
the member variable for this icon was not initialized
from resources. This fix enables "[+>" icon to appear
in status bar when the number of indications in status
bar becomes large.

Bug: 8368569
Change-Id: Ieb3412eed831052d69c0cf63c9b4230c38171e4a
Add @hide to superuser

Signed-off-by: htchoi1995 <htchoi1995@gmail.com>