lib/test_bitmap: name EXP_BYTES properly

EXP_BYTES has been wrongly named.  It's a size of the exp array in bits.

While here, go ahead and rename to EXP1_IN_BITS to avoid double renaming
when exp will be renamed to exp1 in the next patch

Link: http://lkml.kernel.org/r/20191022172922.61232-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Author: andy-shev

lib/test_bitmap.c

@@ -374,17 +374,17 @@ static void __init test_bitmap_parselist_user(void)
 	__test_bitmap_parselist(1);
 }
 
-#define EXP_BYTES	(sizeof(exp) * 8)
+#define EXP1_IN_BITS	(sizeof(exp) * 8)
 
 static void __init test_bitmap_arr32(void)
 {
 	unsigned int nbits, next_bit;
-	u32 arr[sizeof(exp) / 4];
-	DECLARE_BITMAP(bmap2, EXP_BYTES);
+	u32 arr[EXP1_IN_BITS / 32];
+	DECLARE_BITMAP(bmap2, EXP1_IN_BITS);
 
 	memset(arr, 0xa5, sizeof(arr));
 
-	for (nbits = 0; nbits < EXP_BYTES; ++nbits) {
+	for (nbits = 0; nbits < EXP1_IN_BITS; ++nbits) {
 		bitmap_to_arr32(arr, exp, nbits);
 		bitmap_from_arr32(bmap2, arr, nbits);
 		expect_eq_bitmap(bmap2, exp, nbits);
@@ -396,7 +396,7 @@ static void __init test_bitmap_arr32(void)
 				" tail is not safely cleared: %d\n",
 				nbits, next_bit);
 
-		if (nbits < EXP_BYTES - 32)
+		if (nbits < EXP1_IN_BITS - 32)
 			expect_eq_uint(arr[DIV_ROUND_UP(nbits, 32)],
 								0xa5a5a5a5);
 	}