Increate system image size for vbox_x86 target
Increate system image size for vbox_x86 target

Default system image size of 128M is too small to contain
everything to run Android in VBox.

Change-Id: I1d08051e170817c846660d88203908d090fc4652

xorware/android_build,xorware/android_build,knone1/platform_manifest,xorware/android_build,Hybrid-Power/startsync,hagar006/platform_manifest,xorware/android_build,xorware/android_build,ND-3500/platform_manifest,fallouttester/platform_manifest,pranav01/platform_manifest,see4ri/lolili,RR-msm7x30/platform_manifest