powerpc: Don't use a function descriptor for system call table

There is no need to create a function descriptor for the system call
table. By using one we force the system call table into the text
section and it really belongs in the rodata section.

This also removes another use of dot symbols.
Signed-off-by: NAnton Blanchard <anton@samba.org>

arch/powerpc/kernel/entry_64.S

@@ -39,8 +39,8 @@
  * System calls.
  */
 	.section	".toc","aw"
-.SYS_CALL_TABLE:
-	.tc .sys_call_table[TC],.sys_call_table
+SYS_CALL_TABLE:
+	.tc sys_call_table[TC],sys_call_table
 
 /* This value is used to mark exception frames on the stack. */
 exception_marker:
@@ -162,7 +162,7 @@ system_call:			/* label this so stack traces look sane */
  * Need to vector to 32 Bit or default sys_call_table here,
  * based on caller's run-mode / personality.
  */
-	ld	r11,.SYS_CALL_TABLE@toc(2)
+	ld	r11,SYS_CALL_TABLE@toc(2)
 	andi.	r10,r10,_TIF_32BIT
 	beq	15f
 	addi	r11,r11,8	/* use 32-bit syscall entries */

arch/powerpc/kernel/systbl.S

@@ -36,6 +36,8 @@
 #define PPC_SYS_SPU(func)	PPC_SYS(func)
 #define SYSX_SPU(f, f3264, f32)	SYSX(f, f3264, f32)
 
+.section .rodata,"a"
+
 #ifdef CONFIG_PPC64
 #define sys_sigpending	sys_ni_syscall
 #define sys_old_getrlimit sys_ni_syscall
@@ -43,5 +45,7 @@
 	.p2align	3
 #endif
 
-_GLOBAL(sys_call_table)
+.globl sys_call_table
+sys_call_table:
+
 #include <asm/systbl.h>