powerpc: deleted unused symbol CONFIG_SPL_NAND_MINIMAL and enabled some functionality for common SPL

1. The symbol CONFIG_SPL_NAND_MINIMAL is unused, so deleted it.
2. Some functions were unused in the minimal SPL, but it is useful
in the common SPL. So, enabled some functionality for common SPL.

Signed-off-by: Ying Zhang <b40530@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index da3c345..8748ecd 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -39,7 +39,8 @@
 	return ;
 }
 
-#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
+#if !defined(CONFIG_NAND_SPL) && \
+	(!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL_INIT_MINIMAL))
 void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
 		       phys_addr_t *rpn)
 {
diff --git a/arch/powerpc/cpu/mpc8xxx/law.c b/arch/powerpc/cpu/mpc8xxx/law.c
index 89a561e..a401083 100644
--- a/arch/powerpc/cpu/mpc8xxx/law.c
+++ b/arch/powerpc/cpu/mpc8xxx/law.c
@@ -76,7 +76,8 @@
 	return;
 }
 
-#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
+#if !defined(CONFIG_NAND_SPL) && \
+	(!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL_INIT_MINIMAL))
 static int get_law_entry(u8 i, struct law_entry *e)
 {
 	u32 lawar;
@@ -106,7 +107,8 @@
 	return idx;
 }
 
-#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
+#if !defined(CONFIG_NAND_SPL) && \
+	(!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL_INIT_MINIMAL))
 int set_last_law(phys_addr_t addr, enum law_size sz, enum law_trgt_if id)
 {
 	u32 idx;