armv7m: fix broken stlink build

The stlink partially supports the cortex-m4 fp regs and requires these
defines to build.

Change-Id: Id3aa802ecc7006cb6d9f84b79ab3c21af24c1001
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/545
Tested-by: jenkins

src/target/armv7m.h

@@ -62,7 +62,7 @@ char *armv7m_exception_string(int number);
 /* offsets into armv7m core register cache */
 enum {
 	/* for convenience, the first set of indices match
-	 * the Cortex-M3 DCRSR selectors
+	 * the Cortex-M3/-M4 DCRSR selectors
 	 */
 	ARMV7M_R0,
 	ARMV7M_R1,
@@ -94,6 +94,63 @@ enum {
 	ARMV7M_FAULTMASK,
 	ARMV7M_CONTROL,
 
+	/* 32bit Floating-point registers */
+	ARMV7M_S0,
+	ARMV7M_S1,
+	ARMV7M_S2,
+	ARMV7M_S3,
+	ARMV7M_S4,
+	ARMV7M_S5,
+	ARMV7M_S6,
+	ARMV7M_S7,
+	ARMV7M_S8,
+	ARMV7M_S9,
+	ARMV7M_S10,
+	ARMV7M_S11,
+	ARMV7M_S12,
+	ARMV7M_S13,
+	ARMV7M_S14,
+	ARMV7M_S15,
+	ARMV7M_S16,
+	ARMV7M_S17,
+	ARMV7M_S18,
+	ARMV7M_S19,
+	ARMV7M_S20,
+	ARMV7M_S21,
+	ARMV7M_S22,
+	ARMV7M_S23,
+	ARMV7M_S24,
+	ARMV7M_S25,
+	ARMV7M_S26,
+	ARMV7M_S27,
+	ARMV7M_S28,
+	ARMV7M_S29,
+	ARMV7M_S30,
+	ARMV7M_S31,
+
+	/* 64bit Floating-point registers */
+	ARMV7M_D0,
+	ARMV7M_D1,
+	ARMV7M_D2,
+	ARMV7M_D3,
+	ARMV7M_D4,
+	ARMV7M_D5,
+	ARMV7M_D6,
+	ARMV7M_D7,
+	ARMV7M_D8,
+	ARMV7M_D9,
+	ARMV7M_D10,
+	ARMV7M_D11,
+	ARMV7M_D12,
+	ARMV7M_D13,
+	ARMV7M_D14,
+	ARMV7M_D15,
+
+	/* Floating-point status registers */
+	ARMV7M_FPSID,
+	ARMV7M_FPSCR,
+	ARMV7M_FPEXC,
+
 	ARMV7M_LAST_REG,
 };