common/rc: add _have_kernel_options helper function

Add a new helper function _have_kernel_options() that accepts multiple
kernel config options as arguments. This allows tests to check for
multiple kernel options in a single call, making the requires()
function more concise.

Example usage:
  requires() {
      _have_kernel_options IO_URING BLK_DEV_INTEGRITY
  }

Instead of:
  requires() {
      _have_kernel_option IO_URING
      _have_kernel_option BLK_DEV_INTEGRITY
  }

The function iterates through all provided options and returns failure
if any option is not enabled, maintaining the same error reporting
behavior as individual calls.

Signed-off-by: Chaitanya Kulkarni <[email protected]>
[Shin'ichiro: modified _have_kernel_options() to check all arguments]
Signed-off-by: Shin'ichiro Kawasaki <[email protected]>

Author: ChaitanayaKulkarni

common/rc

@@ -237,6 +237,16 @@ _have_kernel_option() {
 	return 0
 }
 
+_have_kernel_options() {
+	local ret=0
+
+	for opt in "$@"; do
+		_have_kernel_option "$opt" || ret=1
+	done
+
+	return $ret
+}
+
 # Compare the version string in $1 in "a.b.c" format with "$2.$3.$4".
 # If "a.b.c" is smaller than "$2.$3.$4", return true. Otherwise, return
 # false.