drivers : usb: fsl: Implement usb Erratum A007798 workaround

Set TXFIFOTHRESH to adjust ddr pipeline delay for successful large
usb writes

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 349ce52..fe3eb06 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -294,6 +294,10 @@
 	if (has_erratum_a007075())
 		puts("Work-around for Erratum A007075 enabled\n");
 #endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A007798
+	if (has_erratum_a007798())
+		puts("Work-around for Erratum A007798 enabled\n");
+#endif
 #ifdef CONFIG_SYS_FSL_ERRATUM_I2C_A004447
 	if ((SVR_SOC_VER(svr) == SVR_8548 && IS_SVR_REV(svr, 3, 1)) ||
 	    (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV))
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 4c1774f..7860b40 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -678,6 +678,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A006379
 #define CONFIG_SYS_FSL_ERRATUM_A007186
 #define CONFIG_SYS_FSL_ERRATUM_A006593
+#define CONFIG_SYS_FSL_ERRATUM_A007798
 #define CONFIG_SYS_CCSRBAR_DEFAULT	0xfe000000
 #define CONFIG_SYS_FSL_SFP_VER_3_0
 #define CONFIG_SYS_FSL_PCI_VER_3_X