powerpc/pseries: fix the object owners enum value in plpks driver

OS_VAR_LINUX enum in PLPKS driver should be 0x02 instead of 0x01.

Fixes: 2454a7af ("powerpc/pseries: define driver for Platform KeyStore")
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221106205839.600442-2-nayna@linux.ibm.com

arch/powerpc/platforms/pseries/plpks.h

@@ -17,7 +17,7 @@
 #define WORLDREADABLE 0x08000000
 #define SIGNEDUPDATE 0x01000000
 
-#define PLPKS_VAR_LINUX	0x01
+#define PLPKS_VAR_LINUX	0x02
 #define PLPKS_VAR_COMMON	0x04
 
 struct plpks_var {