change upstream source url

Signed-off-by: Toshaan Bharvani <toshaan@powerel.org>

SPECS/seabios.spec

@@ -6,7 +6,7 @@ Summary:        Open-source legacy BIOS implementation
 License:        LGPLv3
 URL:            https://www.coreboot.org/SeaBIOS
 
-Source0:        https://code.coreboot.org/p/seabios/downloads/get/seabios-1.15.0.tar.gz
+Source0:        https://www.seabios.org/downloads/seabios-1.15.0.tar.gz
 
 Patch0002: 0002-Workaround-for-a-win8.1-32-S4-resume-bug.patch
 Patch0003: 0003-pci-let-firmware-reserve-IO-for-pcie-pci-bridge.patch