ec/google/chromeec: Add is_battery_present()

This patch adds is_battery_present() to check if the
battery is physically present

BUG=b:335046538,b:329722827
TEST=Build Brox and check is_battery_present
returns the correct battery status.

Change-Id: Ie49ed8f6d8b0fa59ec0e7b06efea9cac4d253957
Signed-off-by: Sowmya Aralguppe <sowmya.aralguppe@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83735
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/ec/google/chromeec/ec.c

@@ -1566,3 +1566,19 @@ bool google_chromeec_is_battery_present_and_above_critical_threshold(void)
 
 	return false;
 }
+
+bool google_chromeec_is_battery_present(void)
+{
+	struct ec_params_battery_dynamic_info params = {
+		.index = 0,
+	};
+	struct ec_response_battery_dynamic_info resp;
+
+	if (ec_cmd_battery_get_dynamic(PLAT_EC, &params, &resp) == 0) {
+		/* Check if battery is present */
+		if (resp.flags & EC_BATT_FLAG_BATT_PRESENT)
+			return true;
+	}
+
+	return false;
+}

src/ec/google/chromeec/ec.h

@@ -424,6 +424,14 @@ void google_chromeec_clear_ec_ap_idle(void);
  */
 bool google_chromeec_is_battery_present_and_above_critical_threshold(void);
 
+/**
+ * Check if battery is present.
+ *
+ * @return		true: if the battery is present
+ *			false: if the battery is not present
+ */
+bool google_chromeec_is_battery_present(void);
+
 /**
  * Determine if the UCSI stack is currently active.
  *