Add Texas_S-PVQFN-N40_EP4.6x4.6mm_ThermalVias

Add Texas_S-PVQFN-N40_EP4.6x4.6mm_ThermalVias

This based upon Texas_S-PVQFN-N40_EP4.15x4.15mm_ThermalVias Changed the size of the exposed Pad and paste areas

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• Reuse existing 3D-Model
• Travis failes, but with the same errors as similar footprints
• To be used together with DAC7750IR https://github.com/KiCad/kicad-symbols/pull/960

  Violating F6.3
    Pad requirements for SMD footprints
    Pad(s) potentially missing layers
     - Pad '41' missing layer 'Mask'
  Violating F7.4
    Pad requirements for THT footprints
    Some THT pads have incorrect layer settings
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
     - Pad '41' missing layer '*.Mask'
  Violating F9.2
    Footprint properties should be left to default values.
    Attribute solder_mask_margin == 0.07 != 0!
  Violating F9.3
    3D model settings
    3D model name is different from footprint name (found 'QFN-40-1EP_6x6mm_P0.5mm', expected 'Texas_S-PVQFN-N40_EP4.15x4.15mm_ThermalVias')

• 

• Provide a URL to a datasheet for the footprint(s) you are contributing
• An example screenshot image is very helpful
• If there are matching symbol or 3D model pull requests, provide link(s) as appropriate
• Check the output of the Travis automated check scripts - fix any errors as required