package/sam-ba: update link

The link to at91.com is outdated and redirects to linux4sam.org

Signed-off-by: Daniel Lang <d.lang@abatec.at>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/sam-ba/Config.in.host

@@ -7,5 +7,5 @@ config BR2_PACKAGE_HOST_SAM_BA
 	  programming the Atmel SAM3, SAM7 and SAM9 ARM-based
 	  microcontrollers.
 
-	  http://www.at91.com/linux4sam/bin/view/Linux4SAM/SoftwareTools
+	  https://www.linux4sam.org/bin/view/Linux4SAM/SoftwareTools
 	  https://www.microchip.com/en-us/development-tool/SAM-BA-IN-SYSTEM-PROGRAMMER