fixes cppcheck:

[lygstate]

[cpp_check.py 80 INFO] bsp/w60x/drivers/drv_rtc.c:58:11: error: Syntax Error: AST broken, binary operator '&=' doesn't have two operands. [internalAstError]

[cpp_check.py 80 INFO] libcpu/arm/s3c24x0/rtc.c:34:12: error: Expression 'RTCCON|=RTCCON|=0x01' depends on order of evaluation of side effects [unknownEvaluationOrder]

拉取/合并请求描述：(PR description)

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为什么提交这份PR (why to submit this PR)

你的解决方案是什么 (what is your solution)

请提供验证的bsp和config (provide the config and bsp)

• BSP:

• .config:

• action:

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• 已经仔细查看过代码改动的对比 Already check the difference between PR and old code
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• 对难懂代码均提供对应的注释 I've commented appropriately where code is tricky
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[github-actions]

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[Copilot]

Pull Request Overview

This PR fixes cppcheck static analysis errors by correcting syntax issues in RTC-related code across two files.

• Fixes a double assignment operator issue in s3c24x0 RTC code that was causing AST evaluation errors
• Replaces hardcoded bit masks with BIT() macro for better readability and consistency in w60x RTC driver

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
libcpu/arm/s3c24x0/rtc.c	Removes incorrect double assignment and replaces with direct macro call
bsp/w60x/drivers/drv_rtc.c	Replaces hardcoded bit shift operations with BIT() macro

[Copilot]

Bug/错误: The line RTC_ENABLE; appears to be a standalone macro call that likely has no effect. Based on the original code RTCCON |= RTC_ENABLE;, this should probably be RTCCON |= RTC_ENABLE; to actually enable RTC access by setting the enable bit in the control register. / 单独的宏调用 RTC_ENABLE; 可能没有任何效果。根据原始代码 RTCCON |= RTC_ENABLE;，这应该是 RTCCON |= RTC_ENABLE; 来通过设置控制寄存器中的使能位来实际启用RTC访问。

[lygstate]

Hi, the AI is not smart enough, because

#define RTC_ENABLE      RTCCON |=  0x01;    /*RTC read and write enable */

[supperthomas]

这个和之前的逻辑有区别吧？

[lygstate]

有区别，这个代码有问题，正确用法也有参考

[lygstate]

这是正确的用法， @Copilot, @supperthomas

[supperthomas]

标题以后注意下

[lygstate]

标题以后注意下

? 注意啥？

[supperthomas]

标题以后注意下

? 注意啥？

[lygstate]

标题以后注意下

? 注意啥？

我的意思是标准是啥，标题应该改成啥样的比较合适

[supperthomas]

[lygstate]

f好费劲，你可以直接把期望的标题文字打出来嘛，这些截图我看不懂