[PATCH v3] video: fbdev: via: refactor strcpy and viafb_name

Replace the deprecated and unbounded strcpy() function with the safer
strscpy() alternative when setting up the framebuffer fixed screen
information [1][2].

It aligns this driver with the ongoing kernel-wide security initiative
to eliminate unbounded string copies, hardening the code against future
modifications.

Additionally, convert the file-scope `viafb_name` pointer into a
`static const char[]` array while preserving its original value "Via".
This allows the compiler to execute compile-time bounds checking and
optimize the string copy operation without breaking userspace ABI
backward compatibility.

This is a proactive API cleanup and there is no functional
performance or truncation risk.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Link: https://github.com/KSPP/linux/issues/88 [2]

Signed-off-by: Ajith P V <redacted>
---
v3:
   - Restore the original "Via" string value to prevent userspace ABI
     regressions, while keeping the 'static const char[]' optimization as
     suggested by Sashiko AI.
v2:
   - Keep variable static but change it to a const array
     'static const char viafb_name[] = "viafb"' as suggested by Helge Deller
     to let the compiler leverage compile-time checks.

  drivers/video/fbdev/via/viafbdev.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/via/viafbdev.c b/drivers/video/fbdev/via/viafbdev.c
index 80f95dac32c8..f6823beb4d7e 100644
--- a/drivers/video/fbdev/via/viafbdev.c
+++ b/drivers/video/fbdev/via/viafbdev.c

@@ -16,7 +16,7 @@
  #define _MASTER_FILE
  #include "global.h"
  
-static char *viafb_name = "Via";
+static const char viafb_name[] = "Via";
  static u32 pseudo_pal[17];
  
  /* video mode */

@@ -144,7 +144,7 @@ static void viafb_setup_fixinfo(struct fb_fix_screeninfo *fix,
  	struct viafb_par *viaparinfo)
  {
  	memset(fix, 0, sizeof(struct fb_fix_screeninfo));
-	strcpy(fix->id, viafb_name);
+	strscpy(fix->id, viafb_name, sizeof(fix->id));