mtd: parsers: extend Qcom SMEM parser to SPI flash

The Qcom MIBIB partition might be stored on SPI flash devices, and the
parser works in this case just as well:

[    1.404229] spi_qup 78b5000.spi: IN:block:16, fifo:64, OUT:block:16, fifo:64
[    1.408078] spi-nor spi0.0: found mx25u6435f, expected n25q128a11
[    1.415016] spi-nor spi0.0: mx25u6435f (8192 Kbytes)
[    1.420756] 12 qcomsmem partitions found on MTD device spi0.0
[    1.425739] Creating 12 MTD partitions on "spi0.0":
[    1.431381] 0x000000000000-0x00000000c000 : "0:sbl1"
[    1.437058] 0x00000000c000-0x00000000d000 : "0:mibib"
[    1.442143] 0x00000000d000-0x000000027000 : "0:qsee"
[    1.447057] 0x000000027000-0x000000028000 : "0:devcfg"
[    1.452088] 0x000000028000-0x00000002a000 : "0:rpm"
[    1.457065] 0x00000002a000-0x00000002b000 : "0:cdt"
[    1.461832] 0x00000002b000-0x00000002c000 : "0:appsblenv"
[    1.466736] 0x00000002c000-0x000000036000 : "0:appsbl"
[    1.472248] 0x000000036000-0x00000003a000 : "0:art"
[    1.477297] 0x00000003a000-0x00000003e000 : "config"
[    1.482047] 0x00000003e000-0x00000004e000 : "data"
[    1.487257] 0x00000004e000-0x000000200000 : "0:hlos"

Remove dependency on MTD_NAND_QCOM. Update the Kconfig prompt and help
text accordingly.

Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/7f558e888a41c5b1fd4ca0427b3976531c51a876.1614080824.git.baruch@tkos.co.il

drivers/mtd/parsers/Kconfig

@@ -162,9 +162,8 @@ config MTD_REDBOOT_PARTS_READONLY
 endif # MTD_REDBOOT_PARTS
 
 config MTD_QCOMSMEM_PARTS
-	tristate "Qualcomm SMEM NAND flash partition parser"
-	depends on MTD_NAND_QCOM || COMPILE_TEST
+	tristate "Qualcomm SMEM flash partition parser"
 	depends on QCOM_SMEM
 	help
 	  This provides support for parsing partitions from Shared Memory (SMEM)
-	  for NAND flash on Qualcomm platforms.
+	  for NAND and SPI flash on Qualcomm platforms.