esp_lcd: Buffer allocated in I2C IO is bigger than it needs to be (IDFGH-9674)

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esp-idf/components/esp_lcd/src/esp_lcd_panel_io_i2c.c

Line 25 in 4f0769d

#define CMD_HANDLER_BUFFER_SIZE I2C_LINK_RECOMMENDED_SIZE(7) // only 7 operations will be queued in the handler ATTOW

The buffer allocated for the I2C transactions in the I2C IO of the esp_lcd component is sized big enough for 7 transactions; and I count 6 + START + STOP operations worst-case in panel_io_i2c_rx_buffer.
I2C_LINK_RECOMMENDED_SIZE assumes a "transaction" to comprise up to 5 operations, so for the 6+2 operations needed, I2C_LINK_RECOMMENDED_SIZE(2) should be sufficient as buffer size, saving (7-2) * (5 * I2C_INTERNAL_STRUCT_SIZE)=600 bytes of heap.