mmc: sdhci-msm: Introduce new ops to dump vendor specific registers

Introduce new sdhci ops to dump vendor specific registers in the
sdhci_dumpregs during error.

Signed-off-by: Sahitya Tummala <[e-mail]>
Signed-off-by: Sarthak Garg <[e-mail]>
Acked-by: Adrian Hunter <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/host/sdhci.c

···
 		}
 	}
 
+	if (host->ops->dump_vendor_regs)
+		host->ops->dump_vendor_regs(host);
+
 	SDHCI_DUMP("============================================\n");
 }
 EXPORT_SYMBOL_GPL(sdhci_dumpregs);

drivers/mmc/host/sdhci.h

···
 					 unsigned int length);
 	void	(*request_done)(struct sdhci_host *host,
 				struct mmc_request *mrq);
+	void    (*dump_vendor_regs)(struct sdhci_host *host);
 };
 
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS