configs: fsl: add missing SYS_FMAN_FW_ADDR defines

Two defconfigs were missed when transitioning the SYS_FMAN_FW_ADDR
symbol to Kconfig. CONFIG_SYS_FMAN_FW_ADDR is currently initialized to
0 by default on these builds, which prevents the firmware from loading.

Add the correct symbols to these defconfigs.

Fixes: a97a071d10d2b ("configs: fsl: migrate FMAN/QE specific defines to Kconfig")
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
diff --git a/configs/ls1046afrwy_tfa_defconfig b/configs/ls1046afrwy_tfa_defconfig
index 2c198cd..23ceb18 100644
--- a/configs/ls1046afrwy_tfa_defconfig
+++ b/configs/ls1046afrwy_tfa_defconfig
@@ -64,6 +64,7 @@
 CONFIG_PHY_GIGE=y
 CONFIG_E1000=y
 CONFIG_FMAN_ENET=y
+CONFIG_SYS_FMAN_FW_ADDR=0x900000
 CONFIG_NVME_PCI=y
 CONFIG_PCI=y
 CONFIG_DM_PCI_COMPAT=y