board: freescale: p1_p2_rdb_pc: Enable TDM function only for P1010

TDM function is supported only on P1010. P2020 does not have PMUXCR_TDM_ENA
register, so do not enable it.

Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c
index 6665aa4..fc676eb 100644
--- a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c
+++ b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c
@@ -154,7 +154,9 @@
 	clrbits_be32(&gur->sdhcdcr, SDHCDCR_CD_INV);
 
 	clrbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_SD_DATA);
+#if defined(CONFIG_TARGET_P1020RDB_PD) || defined(CONFIG_TARGET_P1020RDB_PC)
 	setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_TDM_ENA);
+#endif
 
 	board_gpio_init();
 	board_cpld_init();