crypto: ccree - constify struct debugfs_reg32

pid_cd_regs and debug_regs are never changed and can therefore be made
const.

This allows the compiler to put it in the text section instead of the
data section.

Before:
text data bss dec hex filename
2871 2320 64 5255 1487 drivers/crypto/ccree/cc_debugfs.o

After:
text data bss dec hex filename
3255 1936 64 5255 1487 drivers/crypto/ccree/cc_debugfs.o

Signed-off-by: Rikard Falkeborn <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/ccree/cc_debugfs.c

···
 	{ .name = "VERSION" }, /* Must be 1st */
 };
 
-static struct debugfs_reg32 pid_cid_regs[] = {
+static const struct debugfs_reg32 pid_cid_regs[] = {
 	CC_DEBUG_REG(PERIPHERAL_ID_0),
 	CC_DEBUG_REG(PERIPHERAL_ID_1),
 	CC_DEBUG_REG(PERIPHERAL_ID_2),
···
 	CC_DEBUG_REG(COMPONENT_ID_3),
 };
 
-static struct debugfs_reg32 debug_regs[] = {
+static const struct debugfs_reg32 debug_regs[] = {
 	CC_DEBUG_REG(HOST_IRR),
 	CC_DEBUG_REG(HOST_POWER_DOWN_EN),
 	CC_DEBUG_REG(AXIM_MON_ERR),