dhd: Don't add regular user to system group.

The system group in android has some elevated privileges which
we don't want apps to have. If for some reason an adaptation needs
normal user in system group, either look for a solution which would
avoid the need or as a last resort add the system group in spec
file with

%define additional_ha_groups \
system\
%{nil}

Commit adding user to system group was made in 2014,
see 5df1e3d.

[dhd] Don't add regular user to system group. Fixes JB#48034

Signed-off-by: Juho Hämäläinen <juho.hamalainen@jolla.com>

Author: jusa

droid-hal-device.inc

@@ -699,14 +699,13 @@ cp tmp/hw-release %{buildroot}/%{_libdir}/droid-devel/hw-release.vars
 mkdir -p %{buildroot}/%{_libdir}/droid/hw-group.d
 cat >> %{buildroot}/%{_libdir}/droid/hw-group.d/default.list <<EOF
 audio
+bluetooth
+camera
 graphics
-system
 input
-camera
 media
-mtp
-bluetooth
 media_rw
+mtp
 EOF
 
 if [ $ANDROID_VERSION_MAJOR -ge "5" ] && \