powerpc/qe: set IReady in QE Microcode Upload

QE Microcode Initialization using qe_upload_microcode() does not work on
P1021 if the IRAM-Ready register is not set after the microcode upload. Add
a definition for the "I-RAM Ready" register and sets it upon microcode
upload completion.

Signed-off-by: Ioannis Kokkoris <ioannis.kokoris@siemens-enterprise.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/qe.h b/arch/powerpc/include/asm/qe.h
index 5e0b6d5..229571a 100644
--- a/arch/powerpc/include/asm/qe.h
+++ b/arch/powerpc/include/asm/qe.h
@@ -499,6 +499,7 @@
 /* I-RAM */
 #define QE_IRAM_IADD_AIE	0x80000000	/* Auto Increment Enable */
 #define QE_IRAM_IADD_BADDR	0x00080000	/* Base Address */
+#define QE_IRAM_READY           0x80000000      /* Ready */
 
 /* UPC */
 #define UPGCR_PROTOCOL	0x80000000	/* protocol ul2 or pl2 */