kernel: move bootargs-append patch to generic

This moves bootargs-append support patch from ipq40xx and ipq806x to
generic. This way we can append additional boot arguments from DTS instead
of only being able to overwrite them.

This is a preparation for kirkwood support of ipTIME NAS1.

Signed-off-by: Sungbo Eo <[email protected]>

target/linux/ipq806x/patches-5.10/997-device_tree_cmdline.patch → target/linux/generic/hack-5.4/920-device_tree_cmdline.patch

@@ -1,6 +1,6 @@
 --- a/drivers/of/fdt.c
 +++ b/drivers/of/fdt.c
-@@ -1055,6 +1055,9 @@ int __init early_init_dt_scan_chosen(uns
+@@ -1059,6 +1059,9 @@ int __init early_init_dt_scan_chosen(uns
  	p = of_get_flat_dt_prop(node, "bootargs", &l);
  	if (p != NULL && l > 0)
  		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
@@ -8,5 +8,5 @@
 +	if (p != NULL && l > 0)
 +		strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
  
-     /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
-      * device tree option of chosen/bootargs-override. This is
+ 	/*
+ 	 * CONFIG_CMDLINE is meant to be a default in case nothing else

target/linux/ipq806x/patches-5.10/900-arm-add-cmdline-override.patch

@@ -17,9 +17,9 @@
  	default ""
 --- a/drivers/of/fdt.c
 +++ b/drivers/of/fdt.c
-@@ -1056,6 +1056,17 @@ int __init early_init_dt_scan_chosen(uns
+@@ -1059,6 +1059,17 @@ int __init early_init_dt_scan_chosen(uns
  	if (p != NULL && l > 0)
- 		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
+ 		strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
  
 +    /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
 +     * device tree option of chosen/bootargs-override. This is

target/linux/mpc85xx/patches-5.10/102-powerpc-add-cmdline-override.patch

@@ -17,9 +17,9 @@
  	help
 --- a/drivers/of/fdt.c
 +++ b/drivers/of/fdt.c
-@@ -1056,6 +1056,17 @@ int __init early_init_dt_scan_chosen(uns
+@@ -1059,6 +1059,17 @@ int __init early_init_dt_scan_chosen(uns
  	if (p != NULL && l > 0)
- 		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
+ 		strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
  
 +    /* CONFIG_CMDLINE_OVERRIDE is used to fallback to a different
 +     * device tree option of chosen/bootargs-override. This is