Currently, I have two different places to upload banners. One for the Desktop banner via the "Banner Slider" tab and one for the mobile site via the "Responsivebannerslider" tab.
I need a one stop module or page where a admin can upload banner images for the all below devices. Could you please confirm whether it is possible to build within "Magento Admin Panel - Community Edition"
Yes, you can create this custom module in magento community You need to create one dropdown as device type
Stored all images in media according to device type.