powerpc/mpc85xx: Update erratum workaround for A006379

Update erratum workaround for A006379 to set register CPCHDBCR0
with value 0x001e0000, replacing the old value 0x003c0000.

Signed-off-by: York Sun <york.sun@nxp.com>
Reported-by: Dave Liu <dave.liu@nxp.com>

arch/powerpc/include/asm/immap_85xx.h

@@ -1579,7 +1579,7 @@ typedef struct cpc_corenet {
 #define CPC_HDBCR0_CDQ_SPEC_DIS	0x08000000
 #define CPC_HDBCR0_TAG_ECC_SCRUB_DIS	0x01000000
 #define CPC_HDBCR0_DATA_ECC_SCRUB_DIS	0x00400000
-#define CPC_HDBCR0_SPLRU_LEVEL_EN	0x003c0000
+#define CPC_HDBCR0_SPLRU_LEVEL_EN	0x001e0000
 #endif /* CONFIG_SYS_FSL_CPC */
 
 /* Global Utilities Block */