dyndbg: Use *no_printk() helpers

When printk-indexing is enabled, each printk() or dev_printk()
invocation emits a pi_entry structure. This is even true when the call
is protected by an always-false check: while the actual code to print
the message is optimized out by the compiler, the pi_entry structure is
still emitted.

Fix this by replacing "if (0) *printk(...)" constructs by calls to the
corresponding *no_printk() helpers.

Note that this has minimal impact, as most (all?) callers of
dynamic_{pr,dev}_debug() are protected by checks for DYNAMIC_DEBUG
anyway. Still, using the helpers serves as a good example to follow.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Reviewed-by: Xiubo Li <[e-mail]>
Reviewed-by: Chris Down <[e-mail]>
Reviewed-by: Petr Mladek <[e-mail]>
Link: https://lore.kernel.org/r/32e18[e-mail]
Signed-off-by: Petr Mladek <[e-mail]>

include/linux/dynamic_debug.h

···
 #define DYNAMIC_DEBUG_BRANCH(descriptor) false
 
 #define dynamic_pr_debug(fmt, ...)					\
-	do { if (0) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
+	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
 #define dynamic_dev_dbg(dev, fmt, ...)					\
-	do { if (0) dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); } while (0)
+	dev_no_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__)
 #define dynamic_hex_dump(prefix_str, prefix_type, rowsize,		\
 			 groupsize, buf, len, ascii)			\
 	do { if (0)							\