ARM: at91: Documentation: update the sama5d3 and armv7m datasheets

Update SAMA5D3 and SAM E70/S70/V70/V71 Family SoC Datasheets. URL are
updated in Microchip documentation.
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20190819151219.19727-1-nicolas.ferre@microchip.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Documentation/arm/microchip.rst

@@ -103,7 +103,7 @@ the Microchip website: http://www.microchip.com.
 
           * Datasheet
 
-          http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11121-32-bit-Cortex-A5-Microcontroller-SAMA5D3_Datasheet.pdf
+          http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11121-32-bit-Cortex-A5-Microcontroller-SAMA5D3_Datasheet_B.pdf
 
     * ARM Cortex-A5 + NEON based SoCs
       - sama5d4 family
@@ -167,7 +167,7 @@ the Microchip website: http://www.microchip.com.
 
           * Datasheet
 
-          http://ww1.microchip.com/downloads/en/DeviceDoc/60001527A.pdf
+          http://ww1.microchip.com/downloads/en/DeviceDoc/SAM-E70-S70-V70-V71-Family-Data-Sheet-DS60001527D.pdf
 
 
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