ppc: Move used_laws to arch_global_data

Move this field into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/include/asm/global_data.h b/arch/powerpc/include/asm/global_data.h
index 760cdab..c7ce7fd 100644
--- a/arch/powerpc/include/asm/global_data.h
+++ b/arch/powerpc/include/asm/global_data.h
@@ -88,6 +88,9 @@
 	uint mp_alloc_base;
 	uint mp_alloc_top;
 #endif /* CONFIG_QE */
+#if defined(CONFIG_FSL_LAW)
+	u32 used_laws;
+#endif
 };
 
 /*
@@ -110,9 +113,6 @@
 #if defined(CONFIG_FSL_ESDHC)
 	u32 sdhc_clk;
 #endif
-#if defined(CONFIG_FSL_LAW)
-	u32 used_laws;
-#endif
 #if defined(CONFIG_E500)
 	u32 used_tlb_cams[(CONFIG_SYS_NUM_TLBCAMS+31)/32];
 #endif