kernel: bump 6.6 to 6.6.38

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.38

Removed target/linux/generic/hack-6.6/900-fix-build-to-handle-return-value.patch
which was introduced as a hacky attempt to fix an upstream issue related to 6.6.37.

Build system: x86/64
Build-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3
Run-tested: x86/64/AMD Cezanne, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3

Signed-off-by: John Audia <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/15879
Signed-off-by: Hauke Mehrtens <[email protected]>

include/kernel-6.6

@@ -1,2 +1,2 @@
-LINUX_VERSION-6.6 = .37
-LINUX_KERNEL_HASH-6.6.37 = f3976e77708694fe4a1f8d1307c315c8a36cbc58f038a38e006b91e29a1f3214
+LINUX_VERSION-6.6 = .38
+LINUX_KERNEL_HASH-6.6.38 = 4ed403ffb550565d03485aeca9a52c128cdde43f4a373a1a9ee3a590524fe743

target/linux/generic/hack-6.6/900-fix-build-to-handle-return-value.patch

@@ -1,19 +0,0 @@
---- a/arch/arm64/net/bpf_jit_comp.c
-+++ b/arch/arm64/net/bpf_jit_comp.c
-@@ -1526,6 +1526,7 @@ struct bpf_prog *bpf_int_jit_compile(str
- 	bool extra_pass = false;
- 	struct jit_ctx ctx;
- 	u8 *image_ptr;
-+	int ret;
- 
- 	if (!prog->jit_requested)
- 		return orig_prog;
-@@ -1648,7 +1649,7 @@ skip_init_ctx:
- 			prog->jited_len = 0;
- 			goto out_off;
- 		}
--		bpf_jit_binary_lock_ro(header);
-+		ret = bpf_jit_binary_lock_ro(header);
- 	} else {
- 		jit_data->ctx = ctx;
- 		jit_data->image = image_ptr;