Claude review: backlight: cgbc: Remove redundant X86 dependency

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Verdict: Good to go.**

The change removes `&& X86` from the `BACKLIGHT_CGBC` Kconfig entry:

```
-	depends on MFD_CGBC && X86
+	depends on MFD_CGBC
```

This is correct. `MFD_CGBC` is defined in `drivers/mfd/Kconfig:241-244` as:

```
config MFD_CGBC
	tristate "Congatec Board Controller"
	select MFD_CORE
	depends on X86
```

Since `MFD_CGBC` already depends on `X86`, any symbol that `depends on MFD_CGBC` transitively inherits the X86 constraint — the explicit `X86` in the backlight Kconfig was redundant. This is consistent with how the other CGBC sub-drivers (watchdog, gpio, hwmon, i2c) are already written — none of them add an explicit `X86` dependency alongside `MFD_CGBC`.

One minor observation: the help text still says "x86-based boards", which is fine — it's describing the hardware, not a Kconfig constraint.

---
Generated by Claude Code Patch Reviewer