[openwrt/openwrt] build: fix missing SOURCE_VERSION variable

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/a1440747f2edb507c819f63f93228cd16c1cdcb5

commit a1440747f2edb507c819f63f93228cd16c1cdcb5
Author: Michael Pratt <mcpratt at pm.me>
AuthorDate: Wed Jul 3 03:15:46 2024 -0400

    build: fix missing SOURCE_VERSION variable
    
    The recipe Download/git-kernel uses DownloadMethod/git
    which now requires a definition of SOURCE_VERSION instead of VERSION
    due to Validate/git being used to check for the variables.
    
    Rename the variable as intended to match with the others
    that were renamed in the referenced commit.
    This fixes the following Makefile parse error
    when downloading a specific kernel repository version
    when configured with the CONFIG_KERNEL_GIT_CLONE_URI option:
    
      Makefile:19: *** Download/git-kernel is missing the SOURCE_VERSION field..  Stop.
    
    Fixes: 9fc79e2e2 ("download: don't overwrite VERSION variable")
    Signed-off-by: Michael Pratt <mcpratt at pm.me>
    Link: https://github.com/openwrt/openwrt/pull/15858
    Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 include/kernel-build.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/kernel-build.mk b/include/kernel-build.mk
index c42dae0049..48e00fa4c6 100644
--- a/include/kernel-build.mk
+++ b/include/kernel-build.mk
@@ -51,7 +51,7 @@ endif
 define Download/git-kernel
   URL:=$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI))
   PROTO:=git
-  VERSION:=$(CONFIG_KERNEL_GIT_REF)
+  SOURCE_VERSION:=$(CONFIG_KERNEL_GIT_REF)
   FILE:=$(LINUX_SOURCE)
   SUBDIR:=linux-$(LINUX_VERSION)
   OPTS:=$(KERNEL_GIT_OPTS)