[PARISC] Remove hardcoded uses of PAGE_SIZE

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
diff --git a/arch/parisc/kernel/hpmc.S b/arch/parisc/kernel/hpmc.S
index 43b41df..2cbf13b 100644
--- a/arch/parisc/kernel/hpmc.S
+++ b/arch/parisc/kernel/hpmc.S
@@ -55,13 +55,13 @@
 	 * IODC requires 7K byte stack.  That leaves 1K byte for os_hpmc.
 	 */
 
-	.align 4096
+	.align	PAGE_SIZE
 hpmc_stack:
 	.block 16384
 
 #define HPMC_IODC_BUF_SIZE 0x8000
 
-	.align 4096
+	.align	PAGE_SIZE
 hpmc_iodc_buf:
 	.block HPMC_IODC_BUF_SIZE