[openwrt/openwrt] ltq-ptm: fix missing-prototypes warning

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/621a1c9b56143a7445cffb750bad730acc2eafa1

commit 621a1c9b56143a7445cffb750bad730acc2eafa1
Author: Shiji Yang <yangshiji66 at outlook.com>
AuthorDate: Sat May 10 17:19:18 2025 +0800

    ltq-ptm: fix missing-prototypes warning
    
    Mark cgu_get_pp32_clock() as static.
    
    Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>
    Link: https://github.com/openwrt/openwrt/pull/18744
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 .../102-fix-missing-prototypes-warning.patch       | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/package/kernel/lantiq/ltq-ptm/patches/102-fix-missing-prototypes-warning.patch b/package/kernel/lantiq/ltq-ptm/patches/102-fix-missing-prototypes-warning.patch
new file mode 100644
index 0000000000..faa5784fca
--- /dev/null
+++ b/package/kernel/lantiq/ltq-ptm/patches/102-fix-missing-prototypes-warning.patch
@@ -0,0 +1,26 @@
+From: Shiji Yang <yangshiji66 at outlook.com>
+Date: Fri, 9 May 2025 02:34:14 +0800
+Subject: [PATCH] fix missing-prototypes warning
+
+Fix the build warning on 6.12 kernel:
+
+/home/db/owrt/build_dir/target-mips_24kc_musl/linux-lantiq_xrx200/ltq-ptm-vr9/ltq-ptm/ifxmips_ptm_vdsl.c:64:15: error: no previous prototype for 'cgu_get_pp32_clock' [-Werror=missing-prototypes]
+   64 | unsigned long cgu_get_pp32_clock(void)
+      |               ^~~~~~~~~~~~~~~~~~
+
+Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>
+---
+ ifxmips_ptm_vdsl.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/ifxmips_ptm_vdsl.c
++++ b/ifxmips_ptm_vdsl.c
+@@ -61,7 +61,7 @@ static void *g_xdata_addr = NULL;
+ 
+ #define ENABLE_TMP_DBG                          0
+ 
+-unsigned long cgu_get_pp32_clock(void)
++static unsigned long cgu_get_pp32_clock(void)
+ {
+ 	struct clk *c = clk_get_ppe();
+ 	unsigned long rate = clk_get_rate(c);