ARM: s3c24xx: Correct SD card write protect detection on Mini2440

The mini2440 computer uses "active high" to signal that the "write protect"
of the inserted MMC is set. The current code uses the opposite, leading to
a wrong detection of write protection. The solution is simply to use
".wprotect_invert = 1" in the description of the MMC.
Signed-off-by: Cedric Roux <sed@free.fr>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/mach-s3c24xx/mach-mini2440.c

@@ -236,6 +236,7 @@ static struct s3c2410fb_mach_info mini2440_fb_info __initdata = {
 static struct s3c24xx_mci_pdata mini2440_mmc_cfg __initdata = {
 	.gpio_detect		= S3C2410_GPG(8),
 	.gpio_wprotect		= S3C2410_GPH(8),
+	.wprotect_invert	= 1,
 	.set_power		= NULL,
 	.ocr_avail		= MMC_VDD_32_33|MMC_VDD_33_34,
 };