km/ls102xa: use qrio selftest_pin for reading selftest

QRIO library now supports direct read of the test pin status.

Signed-off-by: Aleksandar Gerasimovski <aleksandar.gerasimovski@hitachienergy.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c b/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c
index db49e8f..2be2b64 100644
--- a/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c
+++ b/board/keymile/pg-wcom-ls102xa/pg-wcom-ls102xa.c
@@ -150,9 +150,8 @@
 #if defined(CONFIG_POST)
 int post_hotkeys_pressed(void)
 {
-	/* DIC26_SELFTEST: GPRTA0, GPA0 */
-	qrio_gpio_direction_input(QRIO_GPIO_A, 0);
-	return qrio_get_gpio(QRIO_GPIO_A, 0);
+	/* DIC26_SELFTEST: QRIO, SLFTEST */
+	return qrio_get_selftest_pin();
 }
 
 ulong post_word_load(void)