[PATCH v2] configure: Add linux header compile support for LoongArch

[Bibo Mao]

When compiling qemu with system KVM mode for LoongArch, header files
in directory linux-headers/asm-loongarch should be used firstly.
Otherwise it fails to find kvm.h on system with old glibc, since
latest kernel header files are not installed.

This patch adds linux_arch definition for LoongArch system so that
header files in directory linux-headers/asm-loongarch can be included.

Fixes: 714b03c125 ("target/loongarch: Add loongarch kvm into meson build")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
Changes in v2:
 1. Add Fixes label for commit 714b03c125

---
 configure | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index 21ab9a64e9..3d8e24ae01 100755
--- a/configure
+++ b/configure
@@ -445,6 +445,7 @@ case "$cpu" in
   loongarch*)
     cpu=loongarch64
     host_arch=loongarch64
+    linux_arch=loongarch
     ;;
 
   mips64*)

base-commit: 977542ded7e6b28d2bc077bcda24568c716e393c
-- 
2.39.3