frameworks: fix setting default ringtone for multi sim

The defualt value for the ringtone expects a "_" between the setting and
the requested sim subscription. This was not being respected in the
mediascanner when it set the default ringtones, resulting in the setting
value being "ringtone2" instead of "ringtone_2".

Change-Id: I4a9147d579183229cc3300e71194e6f5ab74fbc6
Signed-off-by: Roman Birg <roman@cyngn.com>
Automatic translation import

Change-Id: I7d0558e52d0fe54b2dc5df11201b7bb128407a6a
DSB: PS1 -> PS6

no big differences.
small underp

Change-Id: I3d653ac87c0bcb3ee9e469ecd62b0f21fc6fbc2f
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_frameworks_base into android-4.4_new