meta-aspeed: Fix up github SRC_URIs

Warning message:
work/openbmc/meta-aspeed/recipes-kernel/linux/linux-aspeed_git.bb:
URL: git://github.com/openbmc/linux;protocol=git;branch=dev-5.15
uses git protocol which is no longer supported by github.
Please change to ;protocol=https in the url.

Tested: build linux-aspeed repo and eliminate the warning message.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I00d55df9dd760a1cdef2f6b0db934c9a2cc8b7fa
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc b/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc
index 6098885..0f3d5ef 100644
--- a/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc
+++ b/meta-aspeed/recipes-kernel/linux/linux-aspeed.inc
@@ -6,7 +6,7 @@
 
 KCONFIG_MODE="--alldefconfig"
 
-KSRC ?= "git://github.com/openbmc/linux;protocol=git;branch=${KBRANCH}"
+KSRC ?= "git://github.com/openbmc/linux;protocol=https;branch=${KBRANCH}"
 SRC_URI = "${KSRC}"
 SRC_URI += " \
              file://defconfig \