dtc: format memory reserve as pairs on two lines

When writing the memory reserve table in assembly output,
emit both halves of each 64 bit number on a single .long
statement.  This results in two lines per memory reserve
slot instead of four, each line contains one field (start
or size).

Signed-off-by: Milton Miller <miltonm@bga.com>

flattree.c

@@ -514,10 +514,10 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version, int boot_cpuid_phys)
 			fprintf(f, "\t.globl\t%s\n", re->label);
 			fprintf(f, "%s:\n", re->label);
 		}
-		fprintf(f, "\t.long\t0x%08x\n\t.long\t0x%08x\n",
+		fprintf(f, "\t.long\t0x%08x, 0x%08x\n",
 			(unsigned int)(re->re.address >> 32),
 			(unsigned int)(re->re.address & 0xffffffff));
-		fprintf(f, "\t.long\t0x%08x\n\t.long\t0x%08x\n",
+		fprintf(f, "\t.long\t0x%08x, 0x%08x\n",
 			(unsigned int)(re->re.size >> 32),
 			(unsigned int)(re->re.size & 0xffffffff));
 	}