riscv: Remove the PER_CPU_OFFSET_SHIFT macro

__per_cpu_offset is an array of unsigned long, so we can reuse the
existing RISCV_LGPTR macro.

Signed-off-by: Samuel Holland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paul Walmsley <[email protected]>

Author: SiFiveHolland

arch/riscv/include/asm/asm.h

@@ -84,15 +84,9 @@
 .endm
 
 #ifdef CONFIG_SMP
-#ifdef CONFIG_32BIT
-#define PER_CPU_OFFSET_SHIFT 2
-#else
-#define PER_CPU_OFFSET_SHIFT 3
-#endif
-
 .macro asm_per_cpu dst sym tmp
 	lw    \tmp, TASK_TI_CPU_NUM(tp)
-	slli  \tmp, \tmp, PER_CPU_OFFSET_SHIFT
+	slli  \tmp, \tmp, RISCV_LGPTR
 	la    \dst, __per_cpu_offset
 	add   \dst, \dst, \tmp
 	REG_L \tmp, 0(\dst)