feat(plat/mediatek/common): enable software reset for CIRQ

CIRQ software reset can be used on all platforms, so we remove
CIRQ_NEED_SW_RESET in mt_cirq_sw_reset to enable software reset.

BUG=b:192200380, b:201035723

Signed-off-by: Pan Gao <gtk_pangao@mediatek.com>
Change-Id: Id53ea099ae566bf2a573fca866bd10c60429bd5a
diff --git a/plat/mediatek/common/mtk_cirq.c b/plat/mediatek/common/mtk_cirq.c
index de37986..9cf7144 100644
--- a/plat/mediatek/common/mtk_cirq.c
+++ b/plat/mediatek/common/mtk_cirq.c
@@ -541,11 +541,9 @@
 
 void mt_cirq_sw_reset(void)
 {
-#ifdef CIRQ_NEED_SW_RESET
 	uint32_t st;
 
 	st = mmio_read_32(CIRQ_CON);
 	st |= (CIRQ_SW_RESET << CIRQ_CON_SW_RST_BITS);
 	mmio_write_32(CIRQ_CON, st);
-#endif
 }