[arm] Fix platform requirements for ldrd and strd.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index c1de8a382dc18b7749c60aed7b8f6ad83cf89744..d5f59663daffa90483760605382e8ee9bf20ce0c 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -2072,7 +2072,6 @@ void Assembler::ldrsh(Register dst, const MemOperand& src, Condition cond) {
 
 void Assembler::ldrd(Register dst1, Register dst2,
                      const MemOperand& src, Condition cond) {
-  DCHECK(IsEnabled(ARMv7));
   DCHECK(src.rm().is(no_reg));
   DCHECK(!dst1.is(lr));  // r14.
   DCHECK_EQ(0, dst1.code() % 2);
@@ -2087,7 +2086,6 @@ void Assembler::strd(Register src1, Register src2,
   DCHECK(!src1.is(lr));  // r14.
   DCHECK_EQ(0, src1.code() % 2);
   DCHECK_EQ(src1.code() + 1, src2.code());
-  DCHECK(IsEnabled(ARMv7));
   addrmod3(cond | B7 | B6 | B5 | B4, src1, dst);
 }